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Method for detecting setting strength of concrete in low-temperature environment

A concrete strength and strength detection technology, which is applied in the direction of strength characteristics, the use of stable tension/pressure test material strength, and measuring devices, can solve problems such as methods without concrete strength, achieve short time consumption, improve experimental efficiency, and improve The effect of the experimental effect

Pending Publication Date: 2021-08-03
吴海涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the detection of actual concrete, there is no professional method for detecting the strength of concrete in low temperature environment

Method used

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  • Method for detecting setting strength of concrete in low-temperature environment
  • Method for detecting setting strength of concrete in low-temperature environment
  • Method for detecting setting strength of concrete in low-temperature environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] see figure 1 , a concrete coagulation strength detection method under low temperature environment, described method comprises the following steps:

[0053] S1: Concrete sample preparation, the concrete sample is ground and processed, and prepared into a test block that meets the requirements, which is convenient for subsequent clamping and testing;

[0054] S2: The concrete strength detection device is in place, place the concrete strength detection device above the concrete sample, and align the clamping mechanism with the test block;

[0055] S3: Cool down the concrete sample, pass the cooling medium into the concrete strength testing device, and cool down the concrete;

[0056] S4: The test block is stretched. When the concrete sample reaches a certain temperature, the concrete strength detection device is started to detect the tensile fracture of the test block;

[0057] S5: Data processing. When the experimental block breaks, record the data of the tension sensor...

Embodiment 2

[0065] see Figure 2-8 , a concrete coagulation strength detection device, comprising: a base 1; the outer surface of the base 1 is provided with ribs, the strength of the base 1 is increased by arranging the ribs, and the upper side of the base 1 is provided with a support 2; The support member 2 is provided with a rotating mechanism 4; the rotating mechanism 4 is connected with the transmission structure 7; the transmission mechanism 7 is connected with the power mechanism 6, and the power mechanism 6 drives the transmission mechanism 7 to rotate; There is a lifting mechanism 5; the lifting mechanism 5 runs through the support member 2 and the base 1, and when the rotating mechanism 4 rotates, the lifting mechanism 5 can move up and down; the lower end of the lifting mechanism 5 is provided with a square plate 10; A clamping mechanism 11 is provided, and the clamping mechanism 11 is used to clamp the concrete sample 15; the lifting mechanism 5 is provided with a tension sens...

Embodiment 3

[0077] The difference from Embodiment 1 is that during the concrete measurement process, in order to allow the concrete to be fully cooled, the volume V inside the base, the thickness D of the base plate, and the thickness d of the cold insulation layer satisfy the following relationship:

[0078] d =α·V / D+M;

[0079] Among them, the unit of D and d is cm; α is the correlation coefficient, the value range is 0.005-0.025, and the unit of V is cm 3 ; M is the compensation parameter, the value is 1-3. When α is less than 0.005, the thickness of the cold insulation layer is low, the cold insulation effect is poor, and the cooling time is long; when α is greater than 0.025, the thickness of the cold insulation layer is larger, and the temperature in the base 1 is lower. When cooling the concrete sample 15, If the device is kept at low temperature for a long time, the material of the device becomes brittle, which reduces the strength of the device, and the device is prone to damage...

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Abstract

The invention discloses a method for detecting the setting strength of concrete in a low-temperature environment. The method comprises the steps of S1, preparing a concrete sample, grinding and processing the concrete sample to prepare an experiment block meeting requirements, and facilitating the subsequent clamping detection; S2, placing a concrete strength detection device in place, placing the concrete strength detection device above the concrete sample, and aligning a clamping mechanism with the experiment block; S3, cooling the concrete sample, introducing a cooling medium into the concrete strength detection device, and cooling the concrete; S4, stretching the experiment block, starting the concrete strength detection device when the concrete sample reaches a certain temperature, and carrying out tensile fracture detection on the experiment block; and S5, performing data processing, when the experimental block is broken, recording data of a tension sensor on the concrete strength detection device at the moment, and converting a tension value into a strength value of the concrete. According to the method, the purpose of detecting the strength of the concrete in a low-temperature environment can be achieved.

Description

technical field [0001] The invention belongs to the technical field of concrete strength detection methods, and in particular relates to a concrete coagulation strength detection method in a low-temperature environment. Background technique [0002] After the construction of the project is completed, the strength of the coagulation needs to be tested during the completion acceptance, so as to judge whether the appropriate amount of the project meets the relevant requirements. The strength of concrete has a great influence on the quality of the project. In the construction of the chemical industry, some of the industrial plants are full of chemical raw materials, and their leakage causes the temperature to drop sharply. At this time, the concrete is in a low-temperature environment, and it is of great significance for the factory to maintain a high strength of the concrete in a low-temperature environment, which can avoid further expansion of the accident. Therefore, it is ...

Claims

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Application Information

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IPC IPC(8): G01N3/18G01N3/02G01N3/04
CPCG01N3/18G01N3/02G01N3/04G01N2203/0003G01N2203/0017G01N2203/0067G01N2203/0228
Inventor 吴海涛杨彦荣
Owner 吴海涛
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