Systematic detection method for anti-cracking performance of concrete

Abstract

The invention relates to a systematic detection method for an anti-cracking performance of concrete and in particular relates to a systematic detection method for comprehensively judging the anti-cracking performance of the concrete by detecting an anti-cracking safety coefficient, a shrinkage strain amount, a strength and elastic modulus development curve, a strain concentration point and the restriction degree. The detection method comprises the following steps of detecting a temperature strain parameter of the concrete to judge the anti-cracking safety coefficient of the concrete; detecting a shrinkage strain value of the concrete to judge the shrinkage strain amount of the concrete; detecting the maturity of the concrete to construct the strength and the elastic modulus development curve; simulating and calculating the strain concentration point of the concrete through a central processing unit; detecting a friction coefficient of a concrete entity model to judge the restriction degree of the concrete; comprehensively evaluating the anti-cracking performance of the concrete according to the steps. According to the systematic detection method, the anti-cracking performance of the concrete can be effectively detected, and the manufacturing quality of the concrete is improved, so that the concrete can meet a requirement of a high-standard submarine construction environment.

Description

technical field [0001] The invention relates to a systematic detection method of concrete anti-crack performance, in particular to a method for comprehensively evaluating the anti-crack performance of concrete by detecting anti-crack safety factor, shrinkage strain, strength and elastic modulus development curve, stress concentration point and constraint degree Systematic detection method. Background technique [0002] At present, the number of submarine concrete tunnels in the world is increasing year by year, and the scale is expanding year by year, and the difficulty of prefabricated concrete tunnels is gradually increasing. Concrete tunnel structures are affected by factors such as large cross-section, large volume, structural form, and complex construction techniques, and are prone to hazardous cracks during the construction stage due to temperature, shrinkage, and constraints. In order to ensure the service life of the tunnel main body, reasonable and effective method...

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Problems solved by technology

[0003] At present, domestic and foreign research on tunnel crack control technology mainly focuses on concrete tunnels made by dry docking method. As for concrete tunnels prefabricated by factory method, the concrete tunnel prefabrication technology is the first case in China, and there is no mature construction technology experience for it. Therefore, it is necessary to carry out research on the crack resistance evaluation of industrial prefabricated concrete structures

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