Concrete testing device

Abstract

The utility model discloses a concrete testing device. The concrete testing device comprises a shell, a height measuring structure and a stress detecting structure, a containing cavity is defined by the shell and used for containing concrete. The height measuring structure is arranged on the shell and is used for measuring the concrete aeration height in the accommodating cavity; the stress detection structure is at least partially arranged in the accommodating cavity, and the stress detection structure is used for being in contact with concrete in the accommodating cavity and detecting the stress of the concrete in the accommodating cavity. The concrete testing device provided by the embodiment of the utility model can be used for exploring the relationship between the gas generation rate and the curing degree of the concrete.

Description

TECHNICAL FIELD

[0001] The utility model relates to building material technical field especially is related to a concrete testing device. BACKGROUND

[0002] Carbon fixation aerated concrete as a new type of environmental protection building material, because its carbon absorption, light weight, heat preservation, heat insulation and other excellent characteristics and is widely used in the field of construction. In its production process, the control of the concrete gas evolution state is crucial to the product quality, directly affecting the overall pore structure, strength and durability. In the related art, the gas evolution test of the concrete usually adopts a simple mold for preliminary observation, and the relationship between the gas evolution rate and the curing degree of the concrete cannot be explored. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art. To this end, the utility model provides a concrete testing device, which can explore the relationship between the gas evolution rate and the curing degree of the concrete.

[0004] The concrete testing device of the utility model embodiment comprises:

[0005] The shell defines a containing cavity for containing concrete;

[0006] The height measuring structure is arranged on the shell, and the height measuring structure is used to measure the gas evolution height of the concrete in the containing cavity;

[0007] The stress detection structure is at least partially arranged in the containing cavity, and the stress detection structure is used to contact and detect the stress of the concrete in the containing cavity.

[0008] The concrete testing device according to the utility model embodiment has at least the following beneficial effects:

[0009] By arranging the height measuring structure, the gas evolution rate of the concrete can be calculated after the gas evolution height of the concrete in the containing cavity is measured, combined with the time used for the gas evolution of the concrete. At the same time, the curing degree of the concrete can be measured by combining the stress detection of the stress detection structure on the concrete. After the test is completed, the gas evolution rate and the curing degree of the concrete can be recorded and analyzed to ensure that the gas evolution rate and the curing degree of the concrete are matched, that is, the curing degree of the concrete is high when the gas evolution of the concrete is just completed, so as to ensure the gas evolution stability of the concrete, which helps to establish a more accurate theoretical model and guide the actual engineering operation.

[0010] According to some embodiments of the utility model, the side plate of the shell is provided with a transparent structure.

[0011] According to some embodiments of the utility model, the height measuring structure is a scale, and the scale is arranged on the transparent structure along the height direction.

[0012] According to some embodiments of the present invention, the stress detection structure includes a force-bearing component, a driving component, and a torque sensor. The force-bearing component is at least partially disposed in the receiving cavity, and the torque sensor is connected between the force-bearing component and the driving component. The force-bearing component is used to contact the concrete in the receiving cavity, the driving component is used to drive the force-bearing component to rotate, and the torque sensor is used to detect the magnitude of the torque on the force-bearing component.

[0013] According to some embodiments of the present invention, the concrete testing device further includes a heating component, which is disposed on the side plate of the shell and is used to heat the periphery of the concrete in the receiving cavity.

[0014] According to some embodiments of the present invention, the heating assembly includes a plurality of heating elements, which are arranged around the center line of the housing and distributed at intervals on the side plates of the housing.

[0015] According to some embodiments of the present invention, the concrete testing device further includes a first temperature sensor and a second temperature sensor. The first temperature sensor is disposed in the receiving cavity, and the second temperature sensor is disposed on the side plate of the shell. The first temperature sensor is used to detect the temperature of the middle part of the concrete in the receiving cavity, and the second temperature sensor is used to detect the temperature of the periphery of the concrete in the receiving cavity.

[0016] According to some embodiments of the present invention, each side plate of the housing is provided with at least one second temperature sensor.

[0017] According to some embodiments of the present invention, at least a portion of the inner surface of the housing is provided with an anti-stick layer.

[0018] According to some embodiments of the present invention, the concrete testing apparatus further includes a timer, which is disposed within the housing.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of a concrete testing device provided in one embodiment of the present invention;

[0022] Figure 2 for Figure 1 A transparent schematic diagram of the concrete testing apparatus shown;

[0023] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the concrete testing apparatus.

[0024] Figure label:

[0025] Concrete testing apparatus 100;

[0026] Shell 10; Receiving cavity 101; Side plate 11; Bottom plate 12; Top plate 13;

[0027] Height measurement structure 20;

[0028] Stress detection structure 30; force-bearing component 31; connecting part 311; force-bearing part 312; driving component 32; torque sensor 33;

[0029] Host computer 40;

[0030] Heating component 50; heating element 51;

[0031] First temperature sensor 60;

[0032] Second temperature sensor 70;

[0033] Anti-stick layer 80;

[0034] Timer 90;

[0035] The height direction is H. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0040] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The gas evolution stability of concrete is related to its gas evolution rate and degree of curing. When the gas evolution rate of concrete is too high, the consistency change of the concrete may be too slow, resulting in a low degree of curing after gas evolution and subsequent collapse. Conversely, when the gas evolution rate of concrete is too low, the consistency change of the concrete may be too fast, resulting in a high degree of curing and failure to complete gas evolution. In related technologies, gas evolution tests of concrete are usually conducted using simple molds for preliminary observation, which cannot explore the relationship between the gas evolution rate and the degree of curing.

[0042] In view of this, this utility model provides a concrete testing device 100, which can investigate the relationship between the gas evolution rate and the degree of curing of concrete.

[0043] Please see Figures 1 to 3 The concrete testing apparatus 100 includes a housing 10, a height measuring structure 20, and a stress detection structure 30. The housing 10 defines a receiving cavity 101 for containing concrete. The height measuring structure 20 is disposed in the housing 10 and is used to measure the height of air escaping from the concrete within the receiving cavity 101. The stress detection structure 30 is at least partially disposed in the receiving cavity 101 and is used to contact the concrete within the receiving cavity 101 and detect the stress in the concrete within the receiving cavity 101.

[0044] In this embodiment of the invention, by setting a height measuring structure 20, the gas generation height of the concrete in the receiving cavity 101 can be measured, and the gas generation rate of the concrete can be calculated by combining the time taken for the concrete to generate gas. At the same time, by combining the stress detection structure 30 to detect the stress of the concrete, the degree of curing of the concrete can be measured. After the test is completed, by recording and analyzing the gas generation rate and the degree of curing of the concrete, it can be ensured that the gas generation rate and the degree of curing of the concrete match. That is, the degree of curing of the concrete is relatively high when the gas generation is just completed, thereby ensuring the gas generation stability of the concrete. This helps to establish a more accurate theoretical model and guide actual engineering operations.

[0045] In some embodiments, the side plate 11 of the housing 10 is provided with a transparent structure, so that during the experiment, the experimenter can directly observe the gas generation state of the concrete in the accommodating cavity 101 through the transparent structure, wherein when the height of the concrete no longer changes, it indicates that the concrete has completed gas generation.

[0046] In one example, a portion of the side panel 11 of the housing 10 is made transparent. In another example, the entire side panel 11 of the housing 10 is made transparent.

[0047] like Figure 2 and Figure 3 As shown, in some embodiments, the housing 10 has a cuboid structure. The housing 10 includes four side plates 11, a bottom plate 12, and a top plate 13. The four side plates 11 are connected end to end in sequence. The bottom plate 12 is connected to the lower end of the four side plates 11, and the top plate 13 is connected to the upper end of the four side plates 11. The four side plates 11, the bottom plate 12, and the top plate 13 together define the receiving cavity 101. At least one side plate 11 of the housing 10 is a transparent structure. For example, the side plate 11 can be made of a transparent acrylic material with heat insulation properties.

[0048] In one example, all four side plates 11 of the shell 10 are transparent, so the concrete inside the receiving cavity 101 can be observed from the outside of the four side plates 11. In another example, all four side plates 11 and the top plate 13 of the shell 10 are transparent, so the concrete inside the receiving cavity 101 can be observed from the outside of the four side plates 11 and the top plate 13.

[0049] In some embodiments, each side plate 11 or the entire shell 10 can be made of transparent acrylic material with heat insulation effect. On the one hand, it can facilitate the experimenter to observe the concrete in the cavity 101 from different angles. On the other hand, the shell 10 can provide a certain degree of heat insulation for the concrete and reduce the influence of ambient temperature on the gas generation of the concrete.

[0050] In some other embodiments, the shape of the housing 10 can be designed according to actual needs and is not limited to the cuboid structure described above. For example, the housing 10 can also be a prism structure.

[0051] like Figure 1 As shown, in some embodiments, the height measuring structure 20 is a scale, which is set along the height direction H on the transparent structure of the side plate 11 of the housing 10. In the scheme where the side plate 11 is a transparent structure as a whole, the scale can be set at any position along the height direction H of the side plate 11. In this way, during the test, the experimenter can read the height change after the concrete gasification by the scale, and combined with the time taken for the concrete to gasify, the gasification rate of the concrete can be calculated.

[0052] The scale is either engraved or pasted on the outer side of the side plate 11 of the housing 10. Of course, the height measuring structure 20 can also be a scale, which is set on the outer side of the side plate 11 of the housing 10.

[0053] In other embodiments, the height measuring structure 20 may also be other structures capable of measuring the height change of concrete after it has started to gasify, and is not limited to the scale described above. For example, the height measuring structure 20 may also be an infrared rangefinder, which is located on the top of the housing 10 and is used to emit infrared rays downwards and measure the height change of concrete after it has started to gasify.

[0054] like Figure 2 and Figure 3 As shown, in some embodiments, the stress detection structure 30 includes a force-bearing member 31, a driving member 32, and a torque sensor 33. The force-bearing member 31 is at least partially disposed in the receiving cavity 101, and the torque sensor 33 is connected between the force-bearing member 31 and the driving member 32. The force-bearing member 31 is used to contact the concrete in the receiving cavity 101, the driving member 32 is used to drive the force-bearing member 31 to rotate, and the torque sensor 33 is used to detect the magnitude of the torque on the force-bearing member 31 to measure the degree of curing of the concrete.

[0055] Specifically, after the concrete is filled into the receiving cavity 101, the concrete embeds the load-bearing component 31. After the concrete has completed gasification, the load-bearing component 31 can be driven to rotate inside the concrete by the driving component 32. When the load-bearing component 31 rotates, the concrete will generate rotational resistance on the load-bearing component 31. This rotational resistance is transmitted to the torque sensor 33 through the load-bearing component 31. The greater the torque detected by the torque sensor 33 on the load-bearing component 31, the higher the degree of curing of the concrete. The smaller the torque detected by the torque sensor 33 on the load-bearing component 31, the lower the degree of curing of the concrete.

[0056] In some embodiments, the force-bearing member 31 includes a connecting portion 311 and a force-bearing portion 312. The connecting portion 311 is rod-shaped, and the force-bearing portion 312 is a blade-shaped fan. Multiple fan blades are arranged at intervals around the connecting portion 311 to ensure that the force-bearing member 31 has sufficient area to contact the concrete.

[0057] Among them, the driving component 32 is a drive motor, and the torque sensor 33 is sleeved on the lower end of the connecting part 311 and the output end of the drive motor.

[0058] In some embodiments, the concrete testing apparatus 100 further includes a host computer 40, which is electrically connected to the torque sensor 33. The host computer 40 can obtain and analyze the torque data detected by the torque sensor 33 so that the experimenter can understand the degree of curing of the concrete.

[0059] The host computer 40 can be a personal computer, tablet computer, etc.

[0060] During the gas generation process of concrete, the concrete itself generates heat, often resulting in a concrete temperature higher than the ambient temperature. A lower ambient temperature can negatively impact the gas generation process. For example... Figure 2 and Figure 3 As shown, in some embodiments, the concrete testing apparatus 100 further includes a heating component 50, which is disposed on the side plate 11 of the housing 10. The heating component 50 is used to heat the periphery of the concrete in the receiving cavity 101. Thus, during the concrete gas generation process, the temperature around the concrete can be increased by heating the heating component 50, thereby reducing the influence of ambient temperature on concrete gas generation. In addition, the temperature around the concrete can be adjusted by the heating component 50 to explore the influence of different ambient temperatures on concrete gas generation, which helps to establish a more accurate theoretical model, guide actual engineering operations, and thus ensure the gas generation stability of carbon-fixed aerated concrete.

[0061] In some embodiments, the heating assembly 50 includes a plurality of heating elements 51, which are arranged around the center line of the housing 10 and spaced apart on the side plates 11 of the housing 10. In this way, the plurality of heating elements 51 surround the periphery of the concrete in the receiving cavity 101, and the heating assembly 50 can heat the periphery of the concrete evenly, thereby enabling the concrete to be in a constant ambient temperature.

[0062] In some embodiments, at least one heating element 51 is provided on each side plate 11 of the housing 10.

[0063] In some embodiments, the number of heating elements 51 corresponds to the number of side plates 11, and there are four heating elements 51, which are respectively disposed on the four side plates 11.

[0064] likeFigure 3 As shown, in some embodiments, the heating element 51 is disposed on the inner side of the side plate 11 of the housing 10, and the heating element 51 can directly contact and heat the peripheral portion of the concrete. In other embodiments, the heating element 51 can also be disposed on the outer side of the side plate 11 of the housing 10, and the heating element 51 can indirectly heat the peripheral portion of the concrete through the side plate 11 of the housing 10.

[0065] In some embodiments, the heating element 51 is a transparent thin-film heating element with a transparency of 85% or more.

[0066] In some embodiments, the concrete testing apparatus 100 further includes a first temperature sensor 60 and a second temperature sensor 70. The first temperature sensor 60 is disposed in the receiving cavity 101, and the second temperature sensor 70 is disposed in the side plate 11 of the housing 10. The first temperature sensor 60 is used to detect the temperature of the center of the concrete in the receiving cavity 101, and the second temperature sensor 70 is used to detect the temperature of the periphery of the concrete in the receiving cavity 101. With the above configuration, the temperature changes of the center and periphery of the concrete can be measured separately during the test to explore the temperature changes during the gasification process of the concrete.

[0067] When the temperature measured by the second temperature sensor 70 is lower than the temperature measured by the first temperature sensor 60, the heating element 51 can be controlled to heat the periphery of the concrete so that the periphery temperature of the concrete is consistent with the temperature of the center of the concrete, thereby reducing the influence of the ambient temperature on the concrete temperature.

[0068] The first temperature sensor 60 and the second temperature sensor 70 are electrically connected to the host computer 40, and the host computer 40 can obtain the temperature data measured by the first temperature sensor 60 and the second temperature sensor 70.

[0069] In some embodiments, each side plate 11 of the housing 10 is provided with at least one second temperature sensor 70, so that each second temperature sensor 70 can measure the circumferential temperature of the concrete in the receiving cavity 101 in the corresponding side plate 11 of the housing 10, so that the temperature of the concrete can be measured from the outside to the outside, thereby improving the accuracy of measuring the ambient temperature of the concrete.

[0070] In some embodiments, the second temperature sensor 70 is disposed on the inner side of the side plate 11 of the housing 10, and the second temperature sensor 70 can directly contact the peripheral portion of the concrete and measure the peripheral temperature of the concrete. In other embodiments, the second temperature sensor 70 can also be disposed on the outer side of the side plate 11 of the housing 10, and the second temperature sensor 70 can indirectly measure the peripheral temperature of the concrete through the side plate 11 of the housing 10.

[0071] likeFigure 3 As shown, in some embodiments, at least a portion of the inner surface of the housing 10 is provided with an anti-stick layer 80. The anti-stick layer 80 can effectively prevent concrete from adhering to the inner surface of the housing 10 during the gas generation process, making it easy to clean the inside of the housing 10 after the test is completed, reducing the amount of water required for rinsing, saving water resources, and reducing wastewater discharge and treatment costs.

[0072] In one example, the inner surfaces of the four side plates 11 of the housing 10 are provided with an anti-adhesive layer 80. In another example, the inner surfaces of the four side plates 11 and the bottom plate 12 of the housing 10 are provided with an anti-adhesive layer 80. In yet another example, the inner surfaces of the four side plates 11, the bottom plate 12, and the top plate 13 of the housing 10 are provided with an anti-adhesive layer 80.

[0073] The anti-stick layer 80 can be a transparent anti-stick layer, such as a fluoropolymer coating, a siloxane coating, or a nanostructure coating, which has both anti-stick and transparent effects. Experimenters can observe the gas generation process of the concrete in the receiving cavity 101 through the transparent side plate and the anti-stick layer 80.

[0074] like Figure 1 As shown, in some embodiments, the concrete testing apparatus 100 further includes a timer 90, which is disposed in the housing 10. The timer 90 can time the time taken for the concrete to gasify, and the gasification rate of the concrete can be calculated by combining the change in the gasification height of the concrete.

[0075] The rate of gas generation in concrete is equal to the change in the height of gas generation in the concrete divided by the time it takes for the concrete to generate gas.

[0076] In some embodiments, the timer 90 is fixed to the outer side of the side plate 11 of the housing 10 so that the experimenter can time the time taken for the concrete to generate gas.

[0077] The following is an exemplary description of the method of using the concrete testing device according to an embodiment of this utility model:

[0078] The thoroughly mixed carbon-fixed aerated concrete is poured into the container cavity of the shell. Once the slurry is completely placed in the cavity, the timer is immediately started. Simultaneously, the first temperature sensor begins detecting the temperature at the center of the concrete, and the second temperature sensor begins detecting the temperature at the periphery. As the concrete generates gas within the cavity, its height continuously increases. Once gas generation is complete, the height stops changing. At this point, the timer is stopped, and the height change after gas generation is recorded using a height measurement structure. The gas generation rate is calculated based on the timer's readings. Simultaneously, the stress in the concrete is measured using a stress detection structure to determine the degree of curing. By recording and analyzing the gas generation rate and degree of curing, it is possible to ensure that the gas generation rate and degree of curing are matched, meaning that the concrete has a higher degree of curing when gas generation is just completed, thus guaranteeing the stability of the concrete's gas generation process.

[0079] If the gas evolution rate of concrete is slow due to low ambient temperature or low concrete temperature, heating components can be used to heat the concrete to ensure that it is within a suitable temperature range and that gas evolution is smooth.

[0080] Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of this utility model. Furthermore, embodiments of this utility model and features thereof can be combined with each other, unless otherwise specified.

Claims

1. A concrete testing apparatus, characterized in that, include: A housing defines a receiving cavity for receiving concrete; A height measuring structure is disposed in the housing, and the height measuring structure is used to measure the height of concrete gas generation in the accommodating cavity; A stress detection structure is at least partially disposed in the receiving cavity, the stress detection structure being used to contact the concrete in the receiving cavity and detect the stress of the concrete in the receiving cavity.

2. The concrete testing apparatus according to claim 1, characterized in that, The side panels of the housing have a transparent structure.

3. The concrete testing apparatus according to claim 2, characterized in that, The height measuring structure is a scale, which is set on the transparent structure along the height direction.

4. The concrete testing apparatus according to claim 1, characterized in that, The stress detection structure includes a force-bearing component, a driving component, and a torque sensor. The force-bearing component is at least partially disposed in the receiving cavity. The torque sensor is connected between the force-bearing component and the driving component. The force-bearing component is used to contact the concrete in the receiving cavity. The driving component is used to drive the force-bearing component to rotate. The torque sensor is used to detect the magnitude of the torque on the force-bearing component.

5. The concrete testing apparatus according to claim 1, characterized in that, The concrete testing apparatus further includes a heating component disposed on the side plate of the housing, which is used to heat the periphery of the concrete within the receiving cavity.

6. The concrete testing apparatus according to claim 5, characterized in that, The heating assembly includes a plurality of heating elements, which are arranged around the center line of the housing and spaced apart on the side plates of the housing.

7. The concrete testing apparatus according to claim 5, characterized in that, The concrete testing apparatus further includes a first temperature sensor and a second temperature sensor. The first temperature sensor is disposed in the receiving cavity, and the second temperature sensor is disposed on the side plate of the shell. The first temperature sensor is used to detect the central temperature of the concrete in the receiving cavity, and the second temperature sensor is used to detect the peripheral temperature of the concrete in the receiving cavity.

8. The concrete testing apparatus according to claim 7, characterized in that, Each side plate of the housing is provided with at least one second temperature sensor.

9. The concrete testing apparatus according to claim 1, characterized in that, At least a portion of the inner surface of the housing is provided with an anti-sticking layer.

10. The concrete testing apparatus according to claim 1, characterized in that, The concrete testing apparatus also includes a timer, which is disposed within the housing.

Images