A mechanical property testing method for modified concrete

Abstract

The present invention relates to the technical field of mechanical property testing, and is a method for testing the mechanical properties of modified concrete, comprising: sequentially extracting concrete to be tested from a set of concrete to be tested, obtaining fixed concrete using a fixture unit, obtaining a fixed tensile force using a force-applying unit, obtaining a fixed compressive force and a fixed shear force based on the force-applying unit and the fixed concrete, obtaining heated concrete based on a target thermal resistance heating wire, performing a tensile operation on cooled concrete using the force-applying unit to obtain a cooled tensile force, obtaining a cooled compressive force and a cooled shear force based on the force-applying unit and the cooled concrete, obtaining a tensile difference, obtaining a compression difference using the fixed compressive force and the cooled compressive force, obtaining a shear difference based on the fixed shear force and the cooled shear force, and obtaining a feedback report using the tensile difference, the compression difference, and the shear difference, thereby testing the mechanical properties of the modified concrete. The present invention improves the efficiency of testing the mechanical properties of the modified concrete.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical property testing, and in particular to a mechanical property testing method, system, electronic equipment and computer-readable storage medium for modified concrete. Background Art

[0002] Mechanical property testing of modified concrete is a very important part of materials science and engineering. It is used to measure and evaluate the physical properties of materials under the action of force. The purpose of mechanical property testing of modified concrete is to selectively use modified concrete under different working conditions and avoid adverse consequences caused by the use of inappropriate modified concrete.

[0003] Currently, the mechanical properties testing technology for modified concrete is usually unable to directly obtain mechanical properties results, and often requires professionals to make judgments and analyses. This process takes a lot of time. Therefore, the efficiency of the modified concrete mechanical properties testing method is a technical problem that needs to be solved. Summary of the Invention

[0004] The present invention provides a method for detecting the mechanical properties of modified concrete, the main purpose of which is to improve the efficiency of detecting the mechanical properties of modified concrete.

[0005] To achieve the above-mentioned object, the present invention provides a method for testing the mechanical properties of modified concrete, comprising:

[0006] Identify a concrete test environment for concrete testing, wherein the concrete test environment includes: a process test mechanism for testing and a set of concrete to be tested, wherein the set of concrete to be tested includes multiple concrete to be tested, wherein the process test mechanism includes: a placement unit, a fixture unit, and a force application unit;

[0007] An optimized process test mechanism is obtained based on the process test mechanism and the set of concrete to be tested. After confirming that the optimized process test mechanism is in a normal state, concrete to be tested is sequentially extracted from the set of concrete to be tested, and the following operations are performed on the extracted concrete to be tested:

[0008] After placing the extracted concrete to be tested in the placement unit, starting the clamp unit, and using the started clamp unit to perform a fixing operation on the concrete to be tested placed in the placement unit to obtain fixed concrete;

[0009] Using a force-applying unit to perform a tensile operation on the fixed concrete to obtain a fixed tensile force;

[0010] Obtain fixed compressive force and fixed shear force based on the force application unit and fixed concrete;

[0011] obtaining an ambient temperature, a thermal resistance heating wire, and an initial thermal resistance heating temperature, calculating a target thermal resistance heating temperature based on the ambient temperature, the thermal resistance heating wire, and the initial thermal resistance heating temperature, heating the thermal resistance heating wire to the target thermal resistance heating temperature to obtain a target thermal resistance heating wire, and performing a heating operation on the fixed concrete based on the target thermal resistance heating wire to obtain heated concrete;

[0012] performing a cooling operation on the heated concrete to obtain cooled concrete, and performing a stretching operation on the cooled concrete using a force applying unit to obtain a cooling tensile force;

[0013] Obtaining cooling compression force and cooling shear force based on the force application unit and the cooling concrete;

[0014] Obtaining a stretch difference based on a fixed stretching force and a cooled stretching force, obtaining a compression difference based on a fixed compression force and a cooled compression force, and obtaining a shear difference based on a fixed shear force and a cooled shear force;

[0015] The tensile difference, compression difference and shear difference are used to obtain a feedback report to realize the mechanical property test of the modified concrete.

[0016] Optionally, obtaining an optimized process test mechanism based on the process test mechanism and the concrete set to be tested includes:

[0017] A tensile test is performed on the concrete set to be tested using an optimized process test mechanism and preset test directions, wherein the test directions include: a first principal direction, a second principal direction, and a third principal direction, to obtain first stress data, second stress data, and shear stress data, wherein the first stress data includes: a first tensile stress and a first compressive stress, the second stress data includes: a second tensile stress and a second compressive stress, and the shear stress data includes: a first shear stress and a second shear stress. A failure expression is constructed based on the first tensile stress and the second tensile stress, wherein the failure expression is as follows:

[0018]

[0019] Among them, f m Indicates the internal failure state value of the concrete to be tested, x1, x2 and y1, y2 are longitudinal tensile strength, longitudinal compressive strength and transverse tensile strength, transverse compressive strength respectively, q = 1, 2, 3, when q = 1, σ q1 , σ q2 They represent the first tensile stress in the first stress data and the second tensile stress in the second stress data, respectively. When q = 2, σ q1 , σ q2 They represent the first compressive stress in the first stress data and the second compressive stress in the second stress data, respectively. When q=3, σ q1 , σq2 They represent the first shear stress and the second shear stress in the shear stress data respectively.

[0020] Optionally, the starting of the clamp unit and using the started clamp unit to perform a fixing operation on the concrete to be tested placed in the placement unit to obtain fixed concrete includes:

[0021] receiving a clamp unit instruction for controlling the clamp, opening the clamp unit based on the clamp unit instruction, and using the opened clamp unit to perform a fixing operation on the concrete to be tested, wherein the clamp unit includes: a positioning unit, an opening and closing unit, and a clamping mechanism, wherein a current opening and closing degree of the clamping mechanism is preset;

[0022] Using the positioning unit to perform positioning operations on the concrete to be tested placed behind the placement unit to obtain target concrete;

[0023] Acquire a position opening degree based on the target concrete, and compare the position opening degree with the current opening degree;

[0024] If the position opening degree is less than the current opening degree, the opening degree unit is used to perform a clamping operation on the clamping mechanism to obtain fixed concrete;

[0025] If the position opening degree is equal to the current opening degree, the fixation operation is performed on the target concrete to obtain the fixed concrete;

[0026] If the position opening degree is greater than the current opening degree, the opening degree unit is used to perform an opening operation on the clamping mechanism to obtain an open clamp, and the open clamp is used to perform a fixing operation on the target concrete to obtain fixed concrete.

[0027] Optionally, the step of performing a stretching operation on the fixed concrete using a force applying unit to obtain a fixed tensile force includes:

[0028] receiving a plurality of tensile forces set in accordance with the fixing concrete;

[0029] A stretching sequence force is constructed based on multiple stretching forces, wherein the stretching sequence force is:

[0030]

[0031] Among them, N g represents the tensile sequence force of the fixed concrete, g represents the fixed concrete, Indicates that at time point t i When , the force applying unit performs the tensile force on the fixed concrete;

[0032] According to the stretching sequence force, set the output force of the force applying unit at each time point;

[0033] The force applying unit is used to perform a stretching operation on the fixed concrete according to the output force at each time point, and the fixed concrete is monitored for receiving the stretching force applied by the force applying unit to obtain a fixed stretching force.

[0034] Optionally, obtaining the fixed compressive force and the fixed shear force based on the force applying unit and the fixed concrete includes:

[0035] A pre-built rebound hammer, a pre-built test position set, and compressed fixed concrete are used to obtain an elastic force value set. The test position set includes multiple different test positions, and the elastic force value set includes multiple elastic force values, and the elastic force values ​​correspond one-to-one to the test positions. The target elastic force is calculated using the elastic force value set. The calculation formula is as follows:

[0036]

[0037] Where R represents the target elastic force, R n represents the nth elastic force value in the elastic force value set, and r represents the total number of r elastic force values ​​in the elastic force value set;

[0038] Inputting the target elastic force into a force applying unit, and using the force applying unit after inputting the target elastic force to continue to perform a compression operation on the fixed concrete to obtain compressed concrete, and obtaining a fixed compression force using the compressed concrete;

[0039] A shear operation is performed on the fixed concrete to obtain shear concrete, and the shear concrete is used to obtain a fixed shear force.

[0040] Optionally, the target thermal resistor heating temperature is calculated based on the ambient temperature, the thermal resistor heating wire and the initial thermal resistor heating temperature, and the calculation formula is as follows:

[0041]

[0042] Where T represents the target thermal resistor heating temperature, T s Indicates the initial thermal resistor heating temperature, T e represents the ambient temperature, p represents the resistivity of the thermal resistance heating wire, S represents the cross-sectional area of ​​the thermal resistance heating wire, J represents the current density, c represents the sum of the surface area per unit length of the thermal resistance heating wire, h represents the cross-sectional area of ​​the thermal resistance heating wire, c represents the heat transfer coefficient of the thermal resistance heating wire, ω represents the total heat transfer thermal resistance of the thermal resistance heating wire, L represents the length of the thermal resistance heating wire, and X is the independent variable.

[0043] Optionally, performing a cooling operation on the heated concrete to obtain cooled concrete includes:

[0044] Using a pre-built cooling unit to cool the heated concrete, wherein the cooling unit includes: a temperature sensor, a gas valve, cooling gas, and a volume control mechanism, wherein a high temperature threshold of the cooling unit is preset;

[0045] using a temperature sensor to monitor the temperature of the heated concrete in real time to obtain a reference temperature; when the reference temperature reaches a preset high temperature threshold, confirming receipt of a gas valve opening instruction; opening the gas valve based on the gas valve opening instruction; when the gas valve is successfully opened, obtaining an initial output power; and performing a cooling operation on the heated concrete using a volume control mechanism, the initial output power, and cooling gas;

[0046] comparing a reference temperature of the cooled and heated concrete with a preset target temperature;

[0047] When the reference temperature of the heated concrete after cooling is greater than the target temperature, an updated output power is obtained, and a cooling operation is performed on the heated concrete using the volume control mechanism, the updated output power, and the cooling gas;

[0048] When the reference temperature of the cooled heated concrete is equal to the target temperature, reception of the gas valve closing instruction is confirmed, the gas valve is closed based on the gas valve closing instruction, and the cooling operation of the heated concrete is completed to obtain cooled concrete.

[0049] Optionally, obtaining a feedback report using the tensile difference, the compression difference, and the shear difference includes:

[0050] Compare the cooling stretching force with the fixed stretching force and make a difference to obtain the stretching difference;

[0051] Compare the cooling compression force with the fixed compression force and make a difference to obtain the compression difference;

[0052] Compare the cooling shear force with the fixed shear force and make a difference to obtain the shear difference value;

[0053] Perform analysis and comparison operations based on the tensile difference, compression difference, and shear difference to obtain performance change values, and construct a feedback report based on the performance change values.

[0054] Optionally, confirming that the optimization process test mechanism is in a normal state includes:

[0055] Obtaining normal verification parameters of the normal state;

[0056] Collecting real-time operating parameters of the optimization process test mechanism;

[0057] Determining whether the real-time operating parameters are equal to normal verification parameters;

[0058] If the real-time operating parameters are not equal to the normal verification parameters, return to the above step of collecting the real-time operating parameters of the optimization process test mechanism;

[0059] If the real-time operating parameters are equal to the normal verification parameters, it is confirmed that the optimization process test mechanism is in a normal state.

[0060] To achieve the above object, the present invention further provides a mechanical property testing system for modified concrete, comprising:

[0061] An environmental testing module is used to confirm a concrete testing environment for concrete testing, wherein the concrete testing environment includes: a process testing mechanism for testing and a set of concrete to be tested, wherein the set of concrete to be tested includes multiple concrete to be tested, wherein the process testing mechanism includes: a placement unit, a fixture unit, and a force application unit;

[0062] a concrete fixing module, configured to obtain an optimized process test mechanism based on the process test mechanism and the set of concrete to be tested, and after confirming that the optimized process test mechanism is in a normal state, sequentially extract concrete to be tested from the set of concrete to be tested, and perform the following operations on the extracted concrete to be tested: after placing the extracted concrete to be tested in the placement unit, activating the clamp unit, and using the activated clamp unit to perform a fixing operation on the concrete to be tested placed in the placement unit to obtain fixed concrete; using a force-applying unit to perform a stretching operation on the fixed concrete to obtain a fixed tensile force; and obtaining a fixed compressive force and a fixed shear force based on the force-applying unit and the fixed concrete;

[0063] a concrete heating module, configured to obtain an ambient temperature, a thermal resistance heating wire, and an initial thermal resistance heating temperature, calculate a target thermal resistance heating temperature based on the ambient temperature, the thermal resistance heating wire, and the initial thermal resistance heating temperature, heat the thermal resistance heating wire to the target thermal resistance heating temperature to obtain a target thermal resistance heating wire, and perform a heating operation on the fixed concrete based on the target thermal resistance heating wire to obtain heated concrete;

[0064] The concrete cooling module is used to perform a cooling operation on the heated concrete to obtain cooled concrete, perform a stretching operation on the cooled concrete using a force-applying unit to obtain a cooling tensile force, obtain a cooling compressive force and a cooling shear force based on the force-applying unit and the cooled concrete; obtain a stretching difference based on the fixed tensile force and the cooling tensile force, obtain a compression difference using the fixed compressive force and the cooling compressive force, and obtain a shear difference based on the fixed shear force and the cooling shear force; and obtain a feedback report using the stretching difference, compression difference, and shear difference.

[0065] In order to solve the above problem, the present invention further provides an electronic device, comprising:

[0066] a memory storing at least one instruction; and

[0067] The processor executes the instructions stored in the memory to implement the above-mentioned method for detecting the mechanical properties of modified concrete.

[0068] In order to solve the above problems, the present invention also provides a computer-readable storage medium, which stores at least one instruction. The at least one instruction is executed by a processor in an electronic device to implement the above-mentioned method for detecting mechanical properties of modified concrete.

[0069] The present invention aims to solve the problems described in the background technology. The present invention obtains an optimized process test mechanism based on the process test mechanism and the set of concrete to be tested. After confirming that the optimized process test mechanism is in a normal state, the concrete to be tested is extracted from the set of concrete to be tested in sequence. The failure expression is added to the original process test mechanism to obtain the optimized process test mechanism, so that it can directly calculate the internal damage state value, thereby improving efficiency. In addition, before using the optimized process test mechanism, its working state is judged to be normal or not, so as to avoid errors in the detected mechanical property values. The fixed concrete is heated based on the target thermal resistance heating wire to obtain heated concrete. The fixed concrete is heated to test the effect of high temperature on the mechanical properties of the fixed concrete, so as to selectively use different concretes in different environments. The heated concrete is cooled to obtain cooled concrete, which is used to confirm the changes in the mechanical properties of the concrete under a rapid cooling environment. The tensile, compression, and shear differential values ​​are used to generate a feedback report. The feedback report includes fixed tensile force, fixed compression, fixed shear force, cooled tensile force, cooled compression force, cooled shear force, tensile differential, compression differential, and shear differential values, clearly and unambiguously reflecting changes in the mechanical properties of concrete. Therefore, the present invention can improve the efficiency of mechanical property testing for modified concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 A schematic flow chart of a method for testing mechanical properties of modified concrete provided by one embodiment of the present invention;

[0071] Figure 2 This is a functional module diagram of a mechanical property testing system for modified concrete provided by one embodiment of the present invention;

[0072] Figure 3 A schematic structural diagram of an electronic device for implementing the method for detecting mechanical properties of modified concrete provided by one embodiment of the present invention.

[0073] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0074] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0075] The embodiments of the present application provide a method for testing the mechanical properties of modified concrete. The execution entity of the method for testing the mechanical properties of modified concrete includes, but is not limited to, at least one of electronic devices such as a server and a terminal that can be configured to execute the method provided in the embodiments of the present application. In other words, the method for testing the mechanical properties of modified concrete can be executed by software or hardware installed on a terminal device or a server device, where the software can be a blockchain platform. The server includes, but is not limited to, a single server, a server cluster, a cloud server, or a cloud server cluster.

[0076] Reference Figure 1 FIG. 1 is a flow chart of a method for testing the mechanical properties of modified concrete according to an embodiment of the present invention. In this embodiment, the method for testing the mechanical properties of modified concrete includes:

[0077] S1. Confirm a concrete test environment for concrete testing, wherein the concrete test environment includes: a process test mechanism for testing and a concrete set to be tested, wherein the concrete set to be tested includes multiple concretes to be tested, wherein the process test mechanism includes: a placement unit, a fixture unit, and a force application unit.

[0078] It should be explained that the concrete testing environment refers to a process testing mechanism and a set of concrete to be tested for testing the mechanical properties of concrete, wherein the process testing mechanism refers to equipment used to test the set of concrete to be tested. The set of concrete to be tested refers to a collection of multiple concretes to be tested that are of the same size and modified in the same way. The placement unit is used to place the concrete to be tested. The fixture unit is used to fix the concrete to be tested. The force-applying unit is a mechanism or device used to apply tensile force, compressive force, and shear force to the fixed concrete to be tested, and obtain numerical values ​​expressing its mechanical properties during the test process.

[0079] For example, Xiao Zhang, as a concrete tester, determines the concrete testing environment in order to test the mechanical properties of a batch of concrete to be tested, so as to achieve the purpose of using different modified concretes according to factors such as different temperatures, different usage environments and different load conditions.

[0080] S2. Obtaining an optimized process test mechanism based on the process test mechanism and the concrete set to be tested, and confirming that the optimized process test mechanism is in a normal state.

[0081] It should be explained that an optimized process test facility incorporates a data analysis system based on the Tsai-Wu failure criterion. This optimized process test facility allows for analysis of the mechanical properties of the concrete being tested. An optimized process test facility operating normally means that the errors in the values ​​measured by the optimized process test facility are negligible.

[0082] Furthermore, the step of obtaining an optimized process test mechanism based on the process test mechanism and the concrete set to be tested includes:

[0083] A tensile test is performed on the concrete set to be tested using an optimized process test mechanism and preset test directions, wherein the test directions include: a first principal direction, a second principal direction, and a third principal direction, to obtain first stress data, second stress data, and shear stress data, wherein the first stress data includes: a first tensile stress and a first compressive stress, the second stress data includes: a second tensile stress and a second compressive stress, and the shear stress data includes: a first shear stress and a second shear stress. A failure expression is constructed based on the first tensile stress and the second tensile stress, wherein the failure expression is as follows:

[0084]

[0085] Among them, f m Indicates the internal failure state value of the concrete to be tested, x1, x2 and y1, y2 are longitudinal tensile strength, longitudinal compressive strength and transverse tensile strength, transverse compressive strength respectively, q = 1, 2, 3, when q = 1, σ q1 , σ q2 They represent the first tensile stress in the first stress data and the second tensile stress in the second stress data, respectively. When q = 2, σ q1 , σ q2 They represent the first compressive stress in the first stress data and the second compressive stress in the second stress data, respectively. When q=3, σ q1 , σ q2 They represent the first shear stress and the second shear stress in the shear stress data respectively.

[0086] It should be explained that the concrete to be tested is a quadrangular prism, which is composed of six faces, wherein the six faces are respectively: two first faces composed of length and width, two second faces composed of length and height, and two third faces composed of width and height. The first principal direction refers to the direction perpendicular to the face composed of width and height, and the first tensile stress and the first compressive stress can be obtained through the first principal direction. The second principal direction refers to the direction perpendicular to the face composed of length and width, and the second tensile stress and the second compressive stress can be obtained through the second principal direction. The third principal direction refers to the clockwise or counterclockwise direction in the face composed of width and height, and the first shear stress and the second shear stress can be obtained through the second principal direction.

[0087] It is important to calculate the internal failure state value f of the concrete to be tested based on the optimized process test organization m , then compares the internal failure state value with 1. If the value is greater than 1, the concrete being tested cannot withstand the applied external force, has failed, and is in an unsafe state. If the value is equal to 1, the concrete is in a critical failure state. If the value is less than 1, no failure has occurred and the concrete is in a safe state. Based on the collected values, the optimization process testing organization can use the failure expression to directly calculate whether there is failure.

[0088] Furthermore, the confirmation that the optimization process test mechanism is in a normal state includes:

[0089] Obtaining normal verification parameters of the normal state;

[0090] Collecting real-time operating parameters of the optimization process test mechanism;

[0091] Determining whether the real-time operating parameters are equal to normal verification parameters;

[0092] If the real-time operating parameters are not equal to the normal verification parameters, return to the above step of collecting the real-time operating parameters of the optimization process test mechanism;

[0093] If the real-time operating parameters are equal to the normal verification parameters, it is confirmed that the optimization process test mechanism is in a normal state.

[0094] It should be explained that the "normal verification parameters" refer to the preset values ​​of various operating parameters under the normal state of the optimized process test mechanism, such as vibration operating parameters and noise operating parameters. The "real-time operating parameters" refer to the current values ​​of various operating parameters under the abnormal state of the optimized process test mechanism. By comparing the real-time operating parameters with the normal verification parameters, the operating status of the optimized process test mechanism can be further confirmed.

[0095] S3. Extracting concrete to be tested from the set of concrete to be tested in sequence, and performing the following operations on the extracted concrete to be tested: placing the extracted concrete to be tested in the placement unit, activating the clamp unit, and using the activated clamp unit to perform a fixing operation on the concrete to be tested placed in the placement unit to obtain fixed concrete.

[0096] It should be explained that the fixture unit is a tool specifically used to fix the concrete to be tested, and the storage unit is a storage rack used to place the concrete to be tested.

[0097] It is understandable that the starting of the clamp unit and the use of the started clamp unit to fix the concrete to be tested placed in the placement unit to obtain fixed concrete include:

[0098] receiving a clamp unit instruction for controlling the clamp, opening the clamp unit based on the clamp unit instruction, and using the opened clamp unit to perform a fixing operation on the concrete to be tested, wherein the clamp unit includes: a positioning unit, an opening and closing unit, and a clamping mechanism, wherein a current opening and closing degree of the clamping mechanism is preset;

[0099] Using the positioning unit to perform positioning operations on the concrete to be tested placed behind the placement unit to obtain target concrete;

[0100] Acquire a position opening degree based on the target concrete, and compare the position opening degree with the current opening degree;

[0101] If the position opening degree is less than the current opening degree, the opening degree unit is used to perform a clamping operation on the clamping mechanism to obtain fixed concrete;

[0102] If the position opening degree is equal to the current opening degree, the fixation operation is performed on the target concrete to obtain the fixed concrete;

[0103] If the position opening degree is greater than the current opening degree, the opening degree unit is used to perform an opening operation on the clamping mechanism to obtain an open clamp, and the open clamp is used to perform a fixing operation on the target concrete to obtain fixed concrete.

[0104] Specifically, the gripping mechanism is a crucial tool for gripping the concrete being tested. The positioning unit detects the position of the concrete being tested, allowing the gripping mechanism to quickly move to that location. The opening / closing unit adjusts the gripping mechanism's opening / closing degree based on the volume of the concrete being tested, ensuring a secure grip. The positional opening / closing degree is determined by the need to adjust the gripping mechanism's opening / closing degree to ensure a secure grip depending on the placement of the concrete being tested.

[0105] Importantly, the different placement methods of the concrete to be tested will affect the degree of opening and closing of the clamping mechanism. Therefore, a position opening and closing degree related to the placement method is set to avoid the inability to use the clamping mechanism to grasp and fix the concrete to be tested due to different placement methods.

[0106] For example, when the concrete to be tested is a cuboid, different opening and closing degrees will be exhibited depending on the placement of the concrete to be tested, such as horizontally, vertically, or diagonally. Therefore, the opening and closing degree of the clamping mechanism needs to be adjusted according to the opening and closing degree of the concrete to be tested.

[0107] S4. Utilize a force-applying unit to perform a tensile operation on the fixed concrete to obtain a fixed tensile force.

[0108] It should be explained that a force-applying unit is a device used to apply external force to fixed concrete, and a stretching operation refers to the use of the force-applying unit to apply a tensile force to the fixed concrete. Tensile force refers to the physical force that acts on an object to cause it to lengthen or thin. When the force-applying unit performs a tensile operation on the fixed concrete, the resulting value is the fixed tensile force.

[0109] Furthermore, the method of using the force applying unit to perform a stretching operation on the fixed concrete to obtain a fixed tensile force includes:

[0110] receiving a plurality of tensile forces set in accordance with the fixing concrete;

[0111] A stretching sequence force is constructed based on multiple stretching forces, wherein the stretching sequence force is:

[0112]

[0113] Among them, N g represents the tensile sequence force of the fixed concrete, g represents the fixed concrete, Indicates that at time point t i When , the force applying unit performs the tensile force on the fixed concrete;

[0114] According to the stretching sequence force, set the output force of the force applying unit at each time point;

[0115] The force applying unit is used to perform a stretching operation on the fixed concrete according to the output force at each time point, and the fixed concrete is monitored for receiving the stretching force applied by the force applying unit to obtain a fixed stretching force.

[0116] Importantly, a stretching sequence force is constructed based on the multiple stretching forces, and then the output force of the force-applying unit at each time point is set based on the stretching sequence force. The force-applying unit is used to perform a stretching operation on the fixed concrete based on the output force at each time point, and the stretching force of the force-applying unit on the fixed concrete is monitored to obtain a fixed stretching force.

[0117] It should be explained that the tensile sequence force represents a sequence of different tensile forces applied to the fixed concrete at different time points.

[0118] For example, assuming 10 tensile forces are set for the fixed concrete, then m = 10. According to the structure of the tensile sequence force, the tensile force applied by the force-applying unit to the fixed concrete may also vary at different time points. For example, at time point t1, the tensile force applied by the force-applying unit is 100 N, at time point t2, the tensile force applied by the force-applying unit is 120 N, and so on.

[0119] Furthermore, according to the structure of the above-mentioned tensile sequence force, the force-applying unit is started to perform a tensile operation on the fixed concrete. Due to the loss of force, the tensile force applied by the force-applying unit on the fixed concrete will generally be smaller than the above-mentioned tensile sequence force, thereby obtaining the fixed tensile force described in the embodiment of the present invention.

[0120] Among them, the structure of fixed tensile force is:

[0121]

[0122] in, Indicates that the fixed concrete receives the tensile force from the force-applying unit. Indicates that at time point t i When , the fixed concrete receives the tensile force from the force-applying unit. Indicates that at time point t m When , the fixed concrete receives the tensile force from the force-applying unit.

[0123] S5. Obtain fixed compressive force and fixed shear force based on the force application unit and the fixed concrete.

[0124] It should be noted that fixed compressive force refers to the maximum compressive force that can be applied to the concrete without changing its volume. Fixed shear force refers to the force that causes the concrete to slide parallel to the surface of application, similarly without causing a change in its volume. The methods for determining fixed compressive and shear forces are similar to those for determining fixed tensile force.

[0125] Furthermore, obtaining the fixed compressive force and the fixed shear force based on the force applying unit and the fixed concrete includes:

[0126] A pre-built rebound hammer, a pre-built test position set, and compressed fixed concrete are used to obtain an elastic force value set. The test position set includes multiple different test positions, and the elastic force value set includes multiple elastic force values, and the elastic force values ​​correspond one-to-one to the test positions. The target elastic force is calculated using the elastic force value set. The calculation formula is as follows:

[0127]

[0128] Where R represents the target elastic force, R n represents the nth elastic force value in the elastic force value set, and r represents the total number of r elastic force values ​​in the elastic force value set;

[0129] Inputting the target elastic force into a force applying unit, and using the force applying unit after inputting the target elastic force to continue to perform a compression operation on the fixed concrete to obtain compressed concrete, and obtaining a fixed compression force using the compressed concrete;

[0130] A shear operation is performed on the fixed concrete to obtain shear concrete, and the shear concrete is used to obtain a fixed shear force.

[0131] It should be explained that the rebound hammer is an instrument used to test the elastic force of fixed concrete after compression. The test orientation set refers to the orientation set for performing elastic force tests on different points on the same surface of the compressed fixed concrete. The multiple elastic force values ​​tested are the elastic force value set, and the average value of the elastic force value set is calculated to obtain the target elastic force.

[0132] Furthermore, the target elastic force is input into the force applying unit, and the force applying unit can apply a compressive force having the same value as the target elastic force to the fixed concrete.

[0133] For ease of understanding, let's use a one-dimensional coordinate system as an example: a fixed concrete surface has a length and width of 10 x 5, respectively. Fifteen test points are constructed, each divided equally into five points on the length and three points on the width. These 15 test points constitute a test orientation set. Based on the test orientation set, 15 elastic force values ​​are obtained, and these 15 elastic force values ​​are used to determine the target elastic force.

[0134] S6. Acquire an ambient temperature, a thermal resistor heating wire, and an initial thermal resistor heating temperature; calculate a target thermal resistor heating temperature based on the ambient temperature, the thermal resistor heating wire, and the initial thermal resistor heating temperature; heat the thermal resistor heating wire to the target thermal resistor heating temperature to obtain a target thermal resistor heating wire; and perform a heating operation on the fixed concrete based on the target thermal resistor heating wire to obtain heated concrete.

[0135] It should be explained that the ambient temperature refers to the temperature of the environment in which the fixed concrete is located, the thermal resistance heating wire is a tool used to heat the fixed concrete, the initial thermal resistance heating temperature refers to the original temperature of the thermal resistance heating wire before heating begins, and the target thermal resistance heating temperature refers to the temperature of the thermal resistance heating wire when used to heat the fixed concrete.

[0136] Furthermore, the target thermal resistor heating temperature is calculated based on the ambient temperature, the thermal resistor heating wire and the initial thermal resistor heating temperature. The calculation formula is as follows:

[0137]

[0138] Where T represents the target thermal resistor heating temperature, T s Indicates the initial thermal resistor heating temperature, T e represents the ambient temperature, p represents the resistivity of the thermal resistance heating wire, S represents the cross-sectional area of ​​the thermal resistance heating wire, J represents the current density, c represents the sum of the surface area per unit length of the thermal resistance heating wire, h represents the cross-sectional area of ​​the thermal resistance heating wire, crepresents the heat transfer coefficient of the thermal resistance heating wire, ω represents the total heat transfer thermal resistance of the thermal resistance heating wire, L represents the length of the thermal resistance heating wire, and X is the independent variable.

[0139] It should be explained that before heating the fixed concrete, the target thermal resistor heating temperature for heating the fixed concrete can be calculated using the selected thermal resistor heating wire, ambient temperature, and initial thermal resistor heating temperature. Thus, when the actual temperature of the monitored thermal resistor heating wire reaches the target thermal resistor heating temperature, the thermal resistor heating wire is used to heat the fixed concrete, thereby improving the accuracy of the heating operation on the fixed concrete, and further improving the accuracy of detecting the modified concrete at different temperatures.

[0140] S7. Perform a cooling operation on the heated concrete to obtain cooled concrete, perform a stretching operation on the cooled concrete using a force applying unit to obtain a cooling tensile force, and obtain a cooling compressive force and a cooling shear force based on the force applying unit and the cooled concrete.

[0141] It should be noted that the temperature of the heated concrete immediately after heating is too high. Therefore, performing mechanical testing on the heated concrete at this time will result in inaccurate mechanical test results due to the excessively high temperature. Therefore, before using the force-applying unit to perform tensile, compressive, and shear operations on the heated concrete, it is necessary to cool the heated concrete to ensure the accuracy of the mechanical testing results when using the cooled concrete. Mechanical testing here includes tensile, shear, and compression.

[0142] In detail, the step of performing a cooling operation on the heated concrete to obtain cooled concrete includes:

[0143] Using a pre-built cooling unit to cool the heated concrete, wherein the cooling unit includes: a temperature sensor, a gas valve, cooling gas, and a volume control mechanism, wherein a high temperature threshold of the cooling unit is preset;

[0144] using a temperature sensor to monitor the temperature of the heated concrete in real time to obtain a reference temperature; when the reference temperature reaches a preset high temperature threshold, confirming receipt of a gas valve opening instruction; opening the gas valve based on the gas valve opening instruction; when the gas valve is successfully opened, obtaining an initial output power; and performing a cooling operation on the heated concrete using a volume control mechanism, the initial output power, and cooling gas;

[0145] comparing a reference temperature of the cooled and heated concrete with a preset target temperature;

[0146] When the reference temperature of the heated concrete after cooling is greater than the target temperature, an updated output power is obtained, and a cooling operation is performed on the heated concrete using the volume control mechanism, the updated output power, and the cooling gas;

[0147] When the reference temperature of the cooled heated concrete is equal to the target temperature, reception of the gas valve closing instruction is confirmed, the gas valve is closed based on the gas valve closing instruction, and the cooling operation of the heated concrete is completed to obtain cooled concrete.

[0148] It should be understood that the temperature sensor refers to a sensor that can sense temperature and convert it into a usable output signal. The gas valve plays the role of opening or closing the cooling gas. The cooling gas refers to nitrogen used for cooling. The role of the volume control mechanism is to adjust the air outlet of the cooling gas to achieve different temperature gradients of the heated concrete according to different air outlets. For example: 300 degrees Celsius is set as the high temperature threshold. The reference temperature is the temperature of the heated concrete itself in a normal temperature environment, and its own temperature increases with the temperature of the thermal resistance heating wire. The target temperature is the temperature that the heated concrete needs to reach. The initial output power is the power of the cooling gas discharged at the beginning, which is different from the updated output power and the initial output power is less than the updated output power. The updated output power refers to the power adjusted according to the reference temperature of the current heated concrete.

[0149] For example, when the heated concrete reaches the high temperature threshold required for testing, the gas valve is opened and the volume control mechanism is used to discharge cooling gas corresponding to the initial output power, thereby performing a cooling operation. At this point, the initial output power is relatively low. When the temperature sensor detects that the reference temperature of the heated concrete is greater than the target temperature, an updated output power is obtained, and the volume control mechanism is used to discharge cooling gas corresponding to the updated output power, thereby achieving a rapid cooling effect on the heated concrete. When the reference temperature of the heated concrete drops to the target temperature, the gas valve is closed, and the heated concrete, which has dropped to the target temperature, is considered cooled concrete.

[0150] S8. Obtain a tensile difference based on the fixed tensile force and the cooled tensile force, obtain a compression difference using the fixed compressive force and the cooled compressive force, obtain a shear difference based on the fixed shear force and the cooled shear force, and obtain a feedback report using the tensile difference, compression difference, and shear difference to achieve mechanical property testing of the modified concrete.

[0151] It should be explained that the tensile difference refers to the difference between the fixed tensile force and the cooling tensile force. The compression difference and the shear difference are obtained in the same way as the tensile difference and can achieve the same effect.

[0152] Furthermore, obtaining a feedback report using the tensile difference, compression difference, and shear difference may include:

[0153] Compare the cooling stretching force with the fixed stretching force and make a difference to obtain the stretching difference;

[0154] Compare the cooling compression force with the fixed compression force and make a difference to obtain the compression difference;

[0155] Compare the cooling shear force with the fixed shear force and make a difference to obtain the shear difference value;

[0156] Perform analysis and comparison operations based on the tensile difference, compression difference, and shear difference to obtain performance change values, and construct a feedback report based on the performance change values.

[0157] It is understood that a feedback report refers to a document used for analysis and evaluation based on the tensile, compression, and shear differential values. For example, the feedback report includes: mechanical data corresponding to fixed concrete, where the mechanical data includes: fixed tensile force, fixed compression force, and fixed shear force; mechanical data corresponding to cooled concrete, where the mechanical data includes: cooled tensile force, cooled compression force, and cooled shear force; and the report includes: tensile differential, compression differential, and shear differential. The tensile, compression, and shear differential values ​​can be used to demonstrate the effects of different high temperatures on concrete. Furthermore, in construction buildings with temperature differential requirements, the feedback report can be used to select concrete for different conditions and working conditions.

[0158] The present invention aims to solve the problems described in the background technology. The present invention obtains an optimized process test mechanism based on the process test mechanism and the set of concrete to be tested. After confirming that the optimized process test mechanism is in a normal state, the concrete to be tested is extracted from the set of concrete to be tested in sequence. The failure expression is added to the original process test mechanism to obtain the optimized process test mechanism, so that it can directly calculate the internal damage state value, thereby improving efficiency. In addition, before using the optimized process test mechanism, its working state is judged to be normal or not, so as to avoid errors in the detected mechanical property values. The fixed concrete is heated based on the target thermal resistance heating wire to obtain heated concrete. The fixed concrete is heated to test the effect of high temperature on the mechanical properties of the fixed concrete, so as to selectively use different concretes in different environments. The heated concrete is cooled to obtain cooled concrete, which is used to confirm the changes in the mechanical properties of the concrete under a rapid cooling environment. The tensile, compression, and shear differential values ​​are used to generate a feedback report. The feedback report includes fixed tensile force, fixed compression, fixed shear force, cooled tensile force, cooled compression force, cooled shear force, tensile differential, compression differential, and shear differential values, clearly and unambiguously reflecting changes in the mechanical properties of concrete. Therefore, the present invention can improve the efficiency of mechanical property testing for modified concrete.

[0159] like Figure 2 FIG. 1 is a functional module diagram of a mechanical property detection system for modified concrete provided by an embodiment of the present invention.

[0160] The mechanical properties testing system 100 for modified concrete described in the present invention can be installed in an electronic device. Depending on the functionality to be implemented, the system 100 can include an environmental testing module 101, a concrete fixing module 102, a concrete heating module 103, and a concrete cooling module 104. A module, also referred to as a unit, is a series of computer program segments that can be executed by an electronic device processor and perform a specific function. These modules are stored in the electronic device's memory.

[0161] The environmental testing module 101 is used to confirm a concrete testing environment for concrete testing, wherein the concrete testing environment includes: a process testing mechanism for testing and a set of concrete to be tested, wherein the set of concrete to be tested includes multiple concrete to be tested, wherein the process testing mechanism includes: a placement unit, a fixture unit, and a force application unit;

[0162] The concrete fixing module 102 is configured to obtain an optimized process test mechanism based on the process test mechanism and the set of concrete to be tested. After confirming that the optimized process test mechanism is in a normal state, concrete to be tested is sequentially extracted from the set of concrete to be tested, and perform the following operations on the extracted concrete to be tested: after placing the extracted concrete to be tested in the placement unit, activate the clamp unit, and use the activated clamp unit to perform a fixing operation on the concrete to be tested placed in the placement unit to obtain fixed concrete; use a force-applying unit to perform a stretching operation on the fixed concrete to obtain a fixed tensile force; and obtain a fixed compressive force and a fixed shear force based on the force-applying unit and the fixed concrete.

[0163] The concrete heating module 103 is configured to obtain an ambient temperature, a thermal resistance heating wire, and an initial thermal resistance heating temperature, calculate a target thermal resistance heating temperature based on the ambient temperature, the thermal resistance heating wire, and the initial thermal resistance heating temperature, heat the thermal resistance heating wire to the target thermal resistance heating temperature to obtain a target thermal resistance heating wire, and perform a heating operation on the fixed concrete based on the target thermal resistance heating wire to obtain heated concrete;

[0164] The concrete cooling module 104 is configured to cool the heated concrete to obtain cooled concrete, stretch the cooled concrete using a force-applying unit to obtain a cooling tensile force, and obtain a cooling compressive force and a cooling shear force based on the force-applying unit and the cooled concrete; obtain a tensile difference based on the fixed tensile force and the cooling tensile force, obtain a compression difference using the fixed compressive force and the cooling compressive force, and obtain a shear difference based on the fixed shear force and the cooling shear force; and obtain a feedback report using the tensile difference, compression difference, and shear difference.

[0165] In detail, the modules in the mechanical properties testing system 100 for modified concrete according to the embodiment of the present invention are used in the same manner as above. Figure 1 The same technical means as the mechanical properties testing method for modified concrete described in and can produce the same technical effects will not be repeated here.

[0166] like Figure 3 FIG. 1 is a schematic diagram of the structure of an electronic device for implementing a method for detecting mechanical properties of modified concrete provided by an embodiment of the present invention.

[0167] The electronic device 1 may include a processor 10, a memory 11 and a bus 12, and may further include a computer program stored in the memory 11 and executable on the processor 10, such as a program for a method for detecting mechanical properties of modified concrete.

[0168] The memory 11 includes at least one type of readable storage medium, and the readable storage medium includes a flash memory, a mobile hard disk, a multimedia card, a card-type memory (for example, an SD or DX memory, etc.), a magnetic memory, a disk, an optical disk, etc. In some embodiments, the memory 11 can be an internal storage unit of the electronic device 1, such as a mobile hard disk of the electronic device 1. In other embodiments, the memory 11 can also be an external storage device of the electronic device 1, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card, etc. equipped on the electronic device 1. Furthermore, the memory 11 also includes an internal storage unit of the electronic device 1 and an external storage device. The memory 11 can not only be used to store application software and various types of data installed in the electronic device 1, such as the code of the program for the mechanical properties detection method of modified concrete, etc., but can also be used to temporarily store data that has been output or is to be output.

[0169] In some embodiments, the processor 10 may be composed of an integrated circuit, such as a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and a combination of various control chips. The processor 10 is the control core (Control Unit) of the electronic device, connecting the various components of the entire electronic device using various interfaces and circuits. It executes or runs programs or modules stored in the memory 11 (such as a program for testing the mechanical properties of modified concrete), and calls data stored in the memory 11 to perform various functions of the electronic device 1 and process data.

[0170] The bus 12 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 12 may be divided into an address bus, a data bus, a control bus, etc. The bus 12 is configured to enable communication between the memory 11 and at least one processor 10, etc.

[0171] Figure 3 Only the electronic device with components is shown, and it can be understood by those skilled in the art that Figure 3 The structure shown does not constitute a limitation on the electronic device 1 , and may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0172] For example, although not shown, the electronic device 1 may further include a power source (such as a battery) for powering the various components. Preferably, the power source may be logically connected to the at least one processor 10 via a power management device, thereby implementing functions such as charging management, discharging management, and power consumption management through the power management device. The power source may further include any components such as one or more DC or AC power sources, a recharging device, a power failure detection circuit, a power converter or inverter, a power status indicator, etc. The electronic device 1 may further include various sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be described in detail here.

[0173] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device 1 and other electronic devices.

[0174] Optionally, the electronic device 1 may further include a user interface, which may be a display or an input unit (such as a keyboard). Optionally, the user interface may also be a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touch device. The display may also be appropriately referred to as a display screen or a display unit, which is used to display information processed in the electronic device 1 and to display a visual user interface.

[0175] It should be understood that the embodiment is for illustration only and the scope of the patent application is not limited to this structure.

[0176] The program for the mechanical property detection method of modified concrete stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When running in the processor 10, it can achieve the following:

[0177] Identify a concrete test environment for concrete testing, wherein the concrete test environment includes: a process test mechanism for testing and a set of concrete to be tested, wherein the set of concrete to be tested includes multiple concrete to be tested, wherein the process test mechanism includes: a placement unit, a fixture unit, and a force application unit;

[0178] An optimized process test mechanism is obtained based on the process test mechanism and the set of concrete to be tested. After confirming that the optimized process test mechanism is in a normal state, concrete to be tested is sequentially extracted from the set of concrete to be tested, and the following operations are performed on the extracted concrete to be tested:

[0179] After placing the extracted concrete to be tested in the placement unit, starting the clamp unit, and using the started clamp unit to perform a fixing operation on the concrete to be tested placed in the placement unit to obtain fixed concrete;

[0180] Using a force-applying unit to perform a tensile operation on the fixed concrete to obtain a fixed tensile force;

[0181] Obtain fixed compressive force and fixed shear force based on the force application unit and fixed concrete;

[0182] obtaining an ambient temperature, a thermal resistance heating wire, and an initial thermal resistance heating temperature, calculating a target thermal resistance heating temperature based on the ambient temperature, the thermal resistance heating wire, and the initial thermal resistance heating temperature, heating the thermal resistance heating wire to the target thermal resistance heating temperature to obtain a target thermal resistance heating wire, and performing a heating operation on the fixed concrete based on the target thermal resistance heating wire to obtain heated concrete;

[0183] performing a cooling operation on the heated concrete to obtain cooled concrete, performing a stretching operation on the cooled concrete using a force applying unit to obtain a cooling tensile force, and obtaining a cooling compressive force and a cooling shear force based on the force applying unit and the cooled concrete;

[0184] Obtaining a stretch difference based on a fixed stretching force and a cooled stretching force, obtaining a compression difference based on a fixed compression force and a cooled compression force, and obtaining a shear difference based on a fixed shear force and a cooled shear force;

[0185] The tensile difference, compression difference and shear difference are used to obtain a feedback report to realize the mechanical property test of the modified concrete.

[0186] Specifically, the specific implementation method of the processor 10 for the above instructions can refer to Figures 1 to 3 The description of the relevant steps in the corresponding embodiments will not be repeated here.

[0187] Furthermore, if the modules / units integrated into the electronic device 1 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a mobile hard drive, a magnetic disk, an optical disk, a computer memory, or a read-only memory (ROM).

[0188] The present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. When the computer program is executed by a processor of an electronic device, the computer program can implement:

[0189] Identify a concrete test environment for concrete testing, wherein the concrete test environment includes: a process test mechanism for testing and a set of concrete to be tested, wherein the set of concrete to be tested includes multiple concrete to be tested, wherein the process test mechanism includes: a placement unit, a fixture unit, and a force application unit;

[0190] An optimized process test mechanism is obtained based on the process test mechanism and the set of concrete to be tested. After confirming that the optimized process test mechanism is in a normal state, concrete to be tested is sequentially extracted from the set of concrete to be tested, and the following operations are performed on the extracted concrete to be tested:

[0191] After placing the extracted concrete to be tested in the placement unit, starting the clamp unit, and using the started clamp unit to perform a fixing operation on the concrete to be tested placed in the placement unit to obtain fixed concrete;

[0192] Using a force-applying unit to perform a tensile operation on the fixed concrete to obtain a fixed tensile force;

[0193] Obtain fixed compressive force and fixed shear force based on the force application unit and fixed concrete;

[0194] obtaining an ambient temperature, a thermal resistance heating wire, and an initial thermal resistance heating temperature, calculating a target thermal resistance heating temperature based on the ambient temperature, the thermal resistance heating wire, and the initial thermal resistance heating temperature, heating the thermal resistance heating wire to the target thermal resistance heating temperature to obtain a target thermal resistance heating wire, and performing a heating operation on the fixed concrete based on the target thermal resistance heating wire to obtain heated concrete;

[0195] performing a cooling operation on the heated concrete to obtain cooled concrete, performing a stretching operation on the cooled concrete using a force applying unit to obtain a cooling tensile force, and obtaining a cooling compressive force and a cooling shear force based on the force applying unit and the cooled concrete;

[0196] Obtaining a stretch difference based on a fixed stretching force and a cooled stretching force, obtaining a compression difference based on a fixed compression force and a cooled compression force, and obtaining a shear difference based on a fixed shear force and a cooled shear force;

[0197] The tensile difference, compression difference and shear difference are used to obtain a feedback report to realize the mechanical property test of the modified concrete.

[0198] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, systems and methods can be implemented in other ways. For example, the system embodiments described above are only exemplary, and actual implementations may have other division methods.

[0199] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed across multiple network elements. Some or all of the modules may be selected to achieve the purpose of the solution of this embodiment according to actual needs.

[0200] In addition, the functional modules in various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or hardware plus software functional modules.

[0201] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0202] Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices recited in a system claim may also be implemented by a single unit or device through software or hardware. Second-order terms are used to indicate names and do not imply any particular order.

[0203] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for testing the mechanical properties of modified concrete, characterized in that: The method comprises: Identify a concrete test environment for concrete testing, wherein the concrete test environment includes: a process test mechanism for testing and a set of concrete to be tested, wherein the set of concrete to be tested includes multiple concrete to be tested, wherein the process test mechanism includes: a placement unit, a fixture unit, and a force application unit; An optimized process test mechanism is obtained based on the process test mechanism and the set of concrete to be tested. After confirming that the optimized process test mechanism is in a normal state, concrete to be tested is sequentially extracted from the set of concrete to be tested, and the following operations are performed on the extracted concrete to be tested: After placing the extracted concrete to be tested in the placement unit, starting the clamp unit, and using the started clamp unit to perform a fixing operation on the concrete to be tested placed in the placement unit to obtain fixed concrete; Using a force-applying unit to perform a tensile operation on the fixed concrete to obtain a fixed tensile force; Obtain fixed compressive force and fixed shear force based on the force application unit and fixed concrete; obtaining an ambient temperature, a thermal resistance heating wire, and an initial thermal resistance heating temperature, calculating a target thermal resistance heating temperature based on the ambient temperature, the thermal resistance heating wire, and the initial thermal resistance heating temperature, heating the thermal resistance heating wire to the target thermal resistance heating temperature to obtain a target thermal resistance heating wire, and performing a heating operation on the fixed concrete based on the target thermal resistance heating wire to obtain heated concrete; performing a cooling operation on the heated concrete to obtain cooled concrete, performing a stretching operation on the cooled concrete using a force applying unit to obtain a cooling tensile force, and obtaining a cooling compressive force and a cooling shear force based on the force applying unit and the cooled concrete; Obtaining a stretch difference based on a fixed stretching force and a cooled stretching force, obtaining a compression difference based on a fixed compression force and a cooled compression force, and obtaining a shear difference based on a fixed shear force and a cooled shear force; The tensile difference, compression difference and shear difference are used to obtain a feedback report to realize the mechanical property test of the modified concrete.

2. The mechanical property testing method for modified concrete according to claim 1, characterized in that: The step of obtaining an optimized process test mechanism based on the process test mechanism and the concrete set to be tested includes: A tensile test is performed on the concrete set to be tested using an optimized process test mechanism and preset test directions, wherein the test directions include: a first principal direction, a second principal direction, and a third principal direction, to obtain first stress data, second stress data, and shear stress data, wherein the first stress data includes: a first tensile stress and a first compressive stress, the second stress data includes: a second tensile stress and a second compressive stress, and the shear stress data includes: a first shear stress and a second shear stress. A failure expression is constructed based on the first tensile stress and the second tensile stress, wherein the failure expression is as follows: Among them, f m Indicates the internal failure state value of the concrete to be tested, x1, x2 and y1, y2 are longitudinal tensile strength, longitudinal compressive strength and transverse tensile strength, transverse compressive strength respectively, q = 1, 2, 3, when q = 1, σ q1 , σ q2 They represent the first tensile stress in the first stress data and the second tensile stress in the second stress data, respectively. When q = 2, σ q1 , σ q2 They represent the first compressive stress in the first stress data and the second compressive stress in the second stress data, respectively. When q=3, σ q1 , σ q2 They represent the first shear stress and the second shear stress in the shear stress data respectively.

3. The mechanical property testing method for modified concrete according to claim 1, characterized in that: The step of starting the clamp unit and using the started clamp unit to fix the concrete to be tested placed in the placement unit to obtain fixed concrete includes: receiving a clamp unit instruction for controlling the clamp, opening the clamp unit based on the clamp unit instruction, and using the opened clamp unit to perform a fixing operation on the concrete to be tested, wherein the clamp unit includes: a positioning unit, an opening and closing unit, and a clamping mechanism, wherein a current opening and closing degree of the clamping mechanism is preset; Using the positioning unit to perform positioning operations on the concrete to be tested placed behind the placement unit to obtain target concrete; Acquire a position opening degree based on the target concrete, and compare the position opening degree with the current opening degree; If the position opening degree is less than the current opening degree, the opening degree unit is used to perform a clamping operation on the clamping mechanism to obtain fixed concrete; If the position opening degree is equal to the current opening degree, the fixation operation is performed on the target concrete to obtain the fixed concrete; If the position opening degree is greater than the current opening degree, the opening degree unit is used to perform an opening operation on the clamping mechanism to obtain an open clamp, and the open clamp is used to perform a fixing operation on the target concrete to obtain fixed concrete.

4. The mechanical property testing method for modified concrete according to claim 3, characterized in that: The method of using a force applying unit to perform a stretching operation on the fixed concrete to obtain a fixed tensile force includes: receiving a plurality of tensile forces set in accordance with the fixing concrete; A stretching sequence force is constructed based on multiple stretching forces, wherein the stretching sequence force is: Among them, N g represents the tensile sequence force of the fixed concrete, g represents the fixed concrete, Indicates that at time point t i When , the force applying unit performs the tensile force on the fixed concrete; According to the stretching sequence force, set the output force of the force applying unit at each time point; The force applying unit is used to perform a stretching operation on the fixed concrete according to the output force at each time point, and the fixed concrete is monitored for receiving the stretching force applied by the force applying unit to obtain a fixed stretching force.

5. The mechanical property testing method for modified concrete according to claim 4, characterized in that: The method of obtaining a fixed compressive force and a fixed shear force based on a force applying unit and fixed concrete includes: A pre-built rebound hammer, a pre-built test position set, and compressed fixed concrete are used to obtain an elastic force value set. The test position set includes multiple different test positions, and the elastic force value set includes multiple elastic force values, and the elastic force values ​​correspond one-to-one to the test positions. The target elastic force is calculated using the elastic force value set. The calculation formula is as follows: Where R represents the target elastic force, R n represents the nth elastic force value in the elastic force value set, and r represents the total number of r elastic force values ​​in the elastic force value set; Inputting the target elastic force into a force applying unit, and using the force applying unit after inputting the target elastic force to continue to perform a compression operation on the fixed concrete to obtain compressed concrete, and obtaining a fixed compression force using the compressed concrete; A shear operation is performed on the fixed concrete to obtain shear concrete, and the shear concrete is used to obtain a fixed shear force.

6. The mechanical property testing method for modified concrete according to claim 5, characterized in that: The target thermal resistor heating temperature is calculated based on the ambient temperature, the thermal resistor heating wire and the initial thermal resistor heating temperature. The calculation formula is as follows: Where T represents the target thermal resistor heating temperature, T s Indicates the initial thermal resistor heating temperature, T e represents the ambient temperature, p represents the resistivity of the thermal resistance heating wire, S represents the cross-sectional area of ​​the thermal resistance heating wire, J represents the current density, c represents the sum of the surface area per unit length of the thermal resistance heating wire, h represents the cross-sectional area of ​​the thermal resistance heating wire, c represents the heat transfer coefficient of the thermal resistance heating wire, ω represents the total heat transfer thermal resistance of the thermal resistance heating wire, L represents the length of the thermal resistance heating wire, and X is the independent variable.

7. The mechanical property testing method for modified concrete according to claim 6, characterized in that: The step of performing a cooling operation on the heated concrete to obtain cooled concrete comprises: Using a pre-built cooling unit to cool the heated concrete, wherein the cooling unit includes: a temperature sensor, a gas valve, cooling gas, and a volume control mechanism, wherein a high temperature threshold of the cooling unit is preset; using a temperature sensor to monitor the temperature of the heated concrete in real time to obtain a reference temperature; when the reference temperature reaches a preset high temperature threshold, confirming receipt of a gas valve opening instruction; opening the gas valve based on the gas valve opening instruction; when the gas valve is successfully opened, obtaining an initial output power; and performing a cooling operation on the heated concrete using a volume control mechanism, the initial output power, and cooling gas; comparing a reference temperature of the cooled and heated concrete with a preset target temperature; When the reference temperature of the heated concrete after cooling is greater than the target temperature, an updated output power is obtained, and a cooling operation is performed on the heated concrete using the volume control mechanism, the updated output power, and the cooling gas; When the reference temperature of the cooled heated concrete is equal to the target temperature, reception of the gas valve closing instruction is confirmed, the gas valve is closed based on the gas valve closing instruction, and the cooling operation of the heated concrete is completed to obtain cooled concrete.

8. The mechanical property testing method for modified concrete according to claim 1, wherein: The method of obtaining a feedback report using the tensile difference, compression difference, and shear difference includes: Compare the cooling stretching force with the fixed stretching force and make a difference to obtain the stretching difference; Compare the cooling compression force with the fixed compression force and make a difference to obtain the compression difference; Compare the cooling shear force with the fixed shear force and make a difference to obtain the shear difference value; Perform analysis and comparison operations based on the tensile difference, compression difference, and shear difference to obtain performance change values, and construct a feedback report based on the performance change values.

9. The mechanical property testing method for modified concrete according to claim 1, wherein: The confirmation that the optimized process test mechanism is in a normal state includes: Obtaining normal verification parameters of the normal state; Collecting real-time operating parameters of the optimization process test mechanism; Determining whether the real-time operating parameters are equal to normal verification parameters; If the real-time operating parameters are not equal to the normal verification parameters, return to the above step of collecting the real-time operating parameters of the optimization process test mechanism; If the real-time operating parameters are equal to the normal verification parameters, it is confirmed that the optimization process test mechanism is in a normal state.

10. A mechanical properties testing system for modified concrete, characterized in that: The system comprises: An environmental testing module is used to confirm a concrete testing environment for concrete testing, wherein the concrete testing environment includes: a process testing mechanism for testing and a set of concrete to be tested, wherein the set of concrete to be tested includes multiple concrete to be tested, wherein the process testing mechanism includes: a placement unit, a fixture unit, and a force application unit; a concrete fixing module, configured to obtain an optimized process test mechanism based on the process test mechanism and the set of concrete to be tested, and after confirming that the optimized process test mechanism is in a normal state, sequentially extract concrete to be tested from the set of concrete to be tested, and perform the following operations on the extracted concrete to be tested: after placing the extracted concrete to be tested in the placement unit, activating the clamp unit, and using the activated clamp unit to perform a fixing operation on the concrete to be tested placed in the placement unit to obtain fixed concrete; using a force-applying unit to perform a stretching operation on the fixed concrete to obtain a fixed tensile force; and obtaining a fixed compressive force and a fixed shear force based on the force-applying unit and the fixed concrete; a concrete heating module, configured to obtain an ambient temperature, a thermal resistance heating wire, and an initial thermal resistance heating temperature, calculate a target thermal resistance heating temperature based on the ambient temperature, the thermal resistance heating wire, and the initial thermal resistance heating temperature, heat the thermal resistance heating wire to the target thermal resistance heating temperature to obtain a target thermal resistance heating wire, and perform a heating operation on the fixed concrete based on the target thermal resistance heating wire to obtain heated concrete; The concrete cooling module is used to perform a cooling operation on the heated concrete to obtain cooled concrete, perform a stretching operation on the cooled concrete using a force-applying unit to obtain a cooling tensile force, obtain a cooling compressive force and a cooling shear force based on the force-applying unit and the cooled concrete; obtain a stretching difference based on the fixed tensile force and the cooling tensile force, obtain a compression difference using the fixed compressive force and the cooling compressive force, and obtain a shear difference based on the fixed shear force and the cooling shear force; and obtain a feedback report using the stretching difference, compression difference, and shear difference.

Images