Concrete internal compactness and temperature monitoring system and monitoring method

Abstract

The invention relates to the technical field of concrete performance detection, in particular to a concrete internal compactness and temperature monitoring system and method.The concrete internal compactness and temperature monitoring system comprises a feeler lever, a base is arranged at the bottom of the feeler lever, a handle support is arranged at the top of the feeler lever, a compactness monitor is clamped through the handle support, and the detection end of the compactness monitor is arranged downwards; a plurality of temperature sensors are arranged on the probe rod from top to bottom at intervals; the data acquisition processor is connected with the temperature sensor and the compactness monitor, and the upper computer is connected with the data acquisition processor and the heating rod; according to the concrete internal compactness and temperature monitoring system, the concrete pouring compactness can be effectively controlled, the uniformity and compactness of the concrete internal structure are ensured, damage to the concrete structure caused by moisture permeation and freeze-thaw circulation is reduced, meanwhile, the temperature of each height position in the concrete can be detected, and the concrete internal compactness and temperature monitoring system is suitable for popularization and application. When the temperature does not meet the requirement, the heating rod is controlled to heat up, so that the concrete can be prevented from being damaged due to low temperature.

Description

Technical Field

[0001] The invention relates to the technical field of concrete performance detection, in particular to a concrete internal density and temperature monitoring system and monitoring method. Background Art

[0002] In cold regions, concrete structures face severe challenges, especially under the influence of long-term water erosion and freeze-thaw cycles. These natural conditions will significantly reduce the concrete's impermeability and freeze-thaw resistance, thereby affecting its structural performance, and even causing structural damage in severe cases. In the prior art, the density control during concrete pouring mainly relies on the experience of construction workers. This method has certain limitations, because the density of concrete directly affects its impermeability and freeze-thaw resistance; inaccurate density control leads to bubbles and voids inside the concrete. These defects will be further enlarged under the action of water erosion and freeze-thaw cycles, thereby reducing the overall performance of the concrete.

[0003] Therefore, how to ensure the uniformity and density of concrete and improve the freeze-thaw resistance of concrete during the concrete construction process is the problem to be solved by the present invention. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a concrete internal density and temperature monitoring system and monitoring method that can ensure the uniformity and density of concrete during the concrete construction process and improve the freeze-thaw resistance of concrete.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A concrete internal density and temperature monitoring system comprises a probe rod, wherein the height of the probe rod is greater than the casting thickness of concrete, a base is arranged at the bottom of the probe rod, the diameter of the base is greater than the diameter of the probe rod, a handle is arranged at the top of the probe rod, a density monitor is connected via the handle, and a detection end of the density monitor is arranged downward; a plurality of temperature sensors are arranged at intervals from top to bottom of the probe rod; the probe rod also comprises a data acquisition processor, a host computer and a heating rod, wherein the data acquisition processor is connected to the temperature sensor and the density monitor, and the host computer is connected to the data acquisition processor and the heating rod.

[0007] Preferably, a further technical solution of the present invention is:

[0008] Preferably, the probe rod is composed of a plurality of unit columns, the bottom layer of the unit column is fixedly connected to the base, and the remaining unit columns are plugged into the bottom layer of the unit column layer by layer from bottom to top, and a first plug-in portion is provided at the bottom of the unit column, and the first plug-in portion is adapted to the inner diameter of the unit column; it also includes a first bolt, and the first bolt penetrates the plug-in portion and the wall of the unit column and then tightens the first nut to further fix the adjacent unit columns.

[0009] Preferably, a second plug-in portion is provided at the lower end of the handle support, and the second plug-in portion is adapted to the inner diameter of the unit column. The handle support and the top-level unit column are plugged and fixed by the second plug-in portion, and also includes a second bolt. The second bolt penetrates the second plug-in portion and the wall of the unit column, and then the second nut is tightened to further fix the handle support and the top-level unit column.

[0010] Preferably, a plurality of brackets are arranged at intervals on the handle of the density monitor, and the density monitor is supported on the handle through the brackets.

[0011] Preferably, the temperature sensor is fixed at a preset position of the probe rod by means of a cable tie or a binding wire.

[0012] Preferably, the probe rod is a hollow cylindrical structure.

[0013] The present invention also discloses a method for monitoring the internal density and temperature of concrete, which is performed by using a concrete internal density and temperature monitoring system, and the specific steps are as follows:

[0014] S1: pouring concrete; at the same time, making a probe rod of appropriate length according to the thickness of the concrete pouring, and installing temperature sensors at intervals along the length of the probe rod;

[0015] S2: Vibrate with a vibrating rod;

[0016] S3: Insert the probe rod vertically into the concrete at the preset detection point, and connect the density monitor to the top of the probe rod through the handle;

[0017] S4: Use a density monitor to detect whether there is non-homogeneous defect in the concrete, and use various temperature sensors to detect the temperature at different heights in the concrete; the density monitor and various temperature sensors transmit the output to the data acquisition processor, and then transmit it to the host computer through the data acquisition processor;

[0018] If there are inhomogeneous defects, use a vibrating rod to vibrate until there are no inhomogeneous defects;

[0019] If the temperature value at any height position is less than the preset threshold, vibrate with a vibrator first. If the temperature value after vibration is still less than the preset threshold, insert a heating rod into the concrete and heat it by controlling the heating rod through the host computer. When the temperature value meets the preset threshold, pull out the heating rod.

[0020] S5: Pull the probe rod out of the concrete;

[0021] S6: Repeat S3 to S5, and end after all the preset detection points are tested for temperature and density;

[0022] S7: Wait for the concrete to set.

[0023] Preferably, at least three temperature sensors are arranged on the probe rod.

[0024] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features:

[0025] The present invention can effectively control the density of concrete pouring through the concrete internal density and temperature monitoring system, ensure the uniformity and density of the internal structure of the concrete, thereby reducing the damage to the concrete structure caused by moisture penetration and freeze-thaw cycles. At the same time, it can also detect the temperature at various heights in the concrete. When the temperature does not meet the requirements, the heating rod is controlled to heat up, which can prevent the concrete from being damaged by low temperature. At the same time, the management personnel can view the measurement data of the density monitor and the temperature sensor in real time through the host computer. The data is relatively intuitive, which is convenient for the management personnel to view at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of a probe rod in an embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the unit column plug-in structure in an embodiment of the present invention.

[0028] Explanation of the reference numerals: 1. probe rod; 101. unit column; 1011. first plug-in portion; 2. base; 3. handle; 4. temperature sensor; 5. cable tie; 6. density monitor. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with specific embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0030] like Figure 1 As shown, this embodiment provides a concrete internal density and temperature monitoring system, including a probe rod 1, the height of the probe rod 1 is greater than the concrete casting thickness, a base 2 is provided at the bottom of the probe rod 1, the diameter of the base 2 is greater than the diameter of the probe rod 1, and a handle 3 is provided at the top of the probe rod 1, and a density monitor 6 is connected through the handle 3, and the detection end of the density monitor 6 is set downward; the probe rod 1 is provided with a plurality of temperature sensors 4 at intervals from top to bottom; it also includes a data acquisition processor, a host computer and a heating rod, the data acquisition processor is connected to the temperature sensor 4 and the density monitor 6, and the host computer is connected to the data acquisition processor and the heating rod.

[0031] like Figure 2The probe rod 1 is composed of a plurality of unit columns 101. The bottom unit column 101 is fixedly connected to the base 2. The other unit columns 101 are plugged in layer by layer from bottom to top on the bottom unit column 101. The bottom of the unit column 101 is provided with a first plug-in portion 1011. The first plug-in portion 1011 is cylindrical, and its outer diameter is adapted to the inner diameter of the unit column 101. In order to avoid the separation of each unit column 101 during the process of inserting or pulling out concrete, the present embodiment is further provided with a first bolt. The first bolt penetrates the plug-in portion and the cylinder wall of the unit column 101, and then tightens the first nut to further fix the adjacent unit columns 101. Among them, the unit column 101 can be made of PVC material.

[0032] Furthermore, a second plug-in portion is provided at the lower end of the handle support 3. The second plug-in portion is cylindrical, and its outer diameter is adapted to the inner diameter of the unit column 101. The handle support 3 and the top-level unit column 101 are plugged and fixed by the second plug-in portion, and also include a second bolt. The second bolt penetrates the second plug-in portion and the wall of the unit column 101, and then the second nut is tightened to further fix the handle support 3 and the top-level unit column 101.

[0033] Furthermore, a plurality of brackets are arranged at intervals on the handle of the density monitor 6 , and the density monitor 6 is connected to the handle 3 through the brackets; in this embodiment, the handle 3 is cylindrical, and the brackets can be stuck on the cylindrical wall of the handle 3 .

[0034] Furthermore, the temperature sensor 4 is fixed to a preset position of the probe rod 1 by means of a tie 5 or a binding wire. Connecting ears may also be provided on both sides of the temperature sensor 4, and the temperature sensor 4 may be fixed to the probe rod 1 by means of bolts connected to the connecting ears.

[0035] Furthermore, the probe rod 1 is a hollow cylindrical structure; it is light in weight and convenient for construction workers to move.

[0036] The present invention also discloses a method for monitoring the internal density and temperature of concrete, which is performed by using a concrete internal density and temperature monitoring system, and the specific steps are as follows:

[0037] S1: pouring concrete; at the same time, making a probe rod 1 of appropriate length according to the thickness of the concrete pouring, and installing temperature sensors 4 at intervals along the length of the probe rod 1.

[0038] S2: Use a vibrator to vibrate the concrete.

[0039] S3: Insert the probe rod 1 vertically into the concrete at the preset detection point, and connect the density monitor 6 to the top of the probe rod 1 through the handle 3.

[0040] S4: Use the density monitor 6 to detect whether the concrete has non-uniform defects, and use the temperature sensors 4 to detect the temperature at different height positions in the concrete; the density monitor 6 and the temperature sensors 4 transmit the output to the data acquisition processor, and transmit it to the host computer through the data acquisition processor; if there are non-uniform defects, use a vibrator to vibrate until there are no non-uniform defects; if the temperature value at any height position is less than the preset threshold, use a vibrator to vibrate first, and when the temperature value after vibration is still less than the preset threshold, it is necessary to insert a heating rod into the concrete, and control the heating rod to heat it through the host computer. After heating to the temperature value that meets the preset threshold, the heating rod is pulled out.

[0041] S5: Pull the probe rod 1 out of the concrete.

[0042] S6: Repeat S3 to S5, and end after all the preset detection points are tested for temperature and density.

[0043] S7: Wait for the concrete to set.

[0044] Preferably, at least three temperature sensors 4 are provided on the probe rod 1. In this embodiment, at least four temperature sensors 4 are provided on the probe rod 1, which are respectively located at the bottom, top, one quarter and three quarters of the height of the concrete structure.

[0045] The present invention can effectively control the density of concrete pouring through the concrete internal density and temperature monitoring system, ensure the uniformity and density of the internal structure of the concrete, thereby reducing the damage to the concrete structure caused by moisture penetration and freeze-thaw cycles. At the same time, it can also detect the temperature at various heights in the concrete. When the temperature does not meet the requirements, the heating rod is controlled to heat up, which can prevent the concrete from being damaged by low temperature. At the same time, the management personnel can view the measurement data of the density monitor and the temperature sensor in real time through the host computer. The data is relatively intuitive, which is convenient for the management personnel to view at any time.

[0046] The above description is only the preferred embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made by using the contents of the present invention specification and its drawings are included in the scope of rights of the present invention.

Claims

1. A concrete internal density and temperature monitoring system, characterized in that: It includes a probe rod, the height of the probe rod is greater than the thickness of the concrete casting, a base is arranged at the bottom of the probe rod, the diameter of the base is greater than the diameter of the probe rod, a handle is arranged at the top of the probe rod, a density monitor is connected through the handle, and the detection end of the density monitor is arranged downward; a plurality of temperature sensors are arranged at intervals from top to bottom of the probe rod; It also includes a data acquisition processor, a host computer and a heating rod. The data acquisition processor is connected with a temperature sensor and a density monitor, and the host computer is connected with the data acquisition processor and the heating rod.

2. The concrete internal density and temperature monitoring system according to claim 1, characterized in that: The probe rod is composed of a number of unit columns. The bottom unit column is fixedly connected to the base, and the remaining unit columns are plugged into the bottom unit column layer by layer from bottom to top. A first plug-in part is provided at the bottom of the unit column, and the first plug-in part is adapted to the inner diameter of the unit column; it also includes a first bolt, which penetrates the plug-in part and the wall of the unit column and then tightens the first nut to further fix the adjacent unit columns.

3. The concrete internal density and temperature monitoring system according to claim 2, characterized in that: A second plug-in portion is provided at the lower end of the handle support, and the second plug-in portion is adapted to the inner diameter of the unit column. The handle support and the top-level unit column are plugged and fixed by the second plug-in portion. It also includes a second bolt. The second bolt penetrates the second plug-in portion and the wall of the unit column and then tightens the second nut to further fix the handle support and the top-level unit column.

4. The concrete internal density and temperature monitoring system according to claim 1, characterized in that: A plurality of brackets are arranged at intervals on the handle of the compactness monitor, and the compactness monitor is connected to the handle through the brackets.

5. The concrete internal density and temperature monitoring system according to claim 1, characterized in that: The temperature sensor is fixed at a preset position of the probe rod by means of a cable tie or binding wire.

6. The concrete internal density and temperature monitoring system according to claim 1, characterized in that: The probe rod is a hollow cylindrical structure.

7. A method for monitoring the internal density and temperature of concrete, characterized in that: The concrete internal density and temperature monitoring system according to any one of claims 1 to 6 is used, and the specific steps are as follows: S1: pouring concrete; at the same time, making a probe rod of appropriate length according to the thickness of the concrete pouring, and installing temperature sensors at intervals along the length of the probe rod; S2: Vibrate with a vibrating rod; S3: Insert the probe rod vertically into the concrete at the preset detection point, and connect the density monitor to the top of the probe rod through the handle; S4: Use a density monitor to detect whether there is non-homogeneous defect in the concrete, and use various temperature sensors to detect the temperature at different heights in the concrete; the density monitor and various temperature sensors transmit the output to the data acquisition processor, and then transmit it to the host computer through the data acquisition processor; If there are inhomogeneous defects, use a vibrating rod to vibrate until there are no inhomogeneous defects; If the temperature value at any height position is less than the preset threshold, vibrate with a vibrator first. If the temperature value after vibration is still less than the preset threshold, insert a heating rod into the concrete and heat it by controlling the heating rod through the host computer. When the temperature value meets the preset threshold, pull out the heating rod. S5: Pull the probe rod out of the concrete; S6: Repeat S3 to S5, and end after all the preset detection points are tested for temperature and density; S7: Wait for the concrete to set.

8. The method for monitoring the internal density and temperature of concrete according to claim 7, characterized in that: At least three temperature sensors are arranged on the probe rod.

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