Rubber concrete fracture performance analysis method based on temperature and humidity changes

Abstract

The invention discloses a rubber concrete fracture performance analysis method based on temperature and humidity changes. The rubber concrete fracture performance analysis method comprises the steps of preparing a test sample piece, simulating the environment of the test sample piece, pretreating the test sample piece, testing and sorting and analyzing a test result. According to the method, a representative rubber concrete test sample is prepared through a strict raw material mixing ratio; different temperature and humidity treatments are carried out on the rubber concrete test sample according to test requirements; therefore, the daily use environment of the test sample is simulated; then a fracture test is carried out on the rubber concrete test sample through a universal testing machine and a DIC system, and test observation is carried out; therefore, the fracture performance of the rubber concrete in different temperature and humidity environments is studied through a macroscopicmechanical property test; scientific and rigorous formula calculation is carried out on an experimental result; and the influence of temperature and humidity on the fracture performance of the rubberconcrete is analyzed according to a calculation result.

Description

technical field [0001] The invention relates to the technical field of material performance analysis, in particular to a method for analyzing the fracture performance of rubber concrete based on changes in temperature and humidity. Background technique [0002] Rubber concrete is a concrete formed by mixing and curing rubber emulsion and auxiliary admixtures with cement when preparing cement mortar or concrete. It has excellent impact resistance and wear resistance, and can better solve the problem of recycling waste rubber products. Compared with ordinary concrete, rubber concrete has better performance in terms of abrasion resistance, crack resistance, seepage resistance, frost resistance, and earthquake resistance, and can effectively reduce the use of natural aggregates and the accumulation of waste rubber products. It has a good application prospect in engineering, but with the increase of rubber content, the strength of rubber concrete continues to decrease, which limi...

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Problems solved by technology

[0002] Rubber concrete is a concrete formed by mixing and curing rubber emulsion and auxiliary admixtures with cement when preparing cement mortar or concrete. It has excellent impact resistance and wear resistance, and can better solve the problem of recycling waste rubber products. Compared with ordinary concrete, rubber concrete has better performance in terms of abrasion resistance, crack resistance, seepage resistance, frost resistance, and earthquake resistance, and can effectively reduce the use of natural aggregates and the accumulation of waste rubber products. It has good application prospects in engineering, but with the increase of rubber content, the strength of rubber concrete continues to decline, which limits its engineering application to a certain extent;

[0003] Cracks are one of the important factors affecting the quality of rubber concrete. In order to promote the application of rubber concrete in practical engineering such as water conservancy, civil engineering, and transportation, it is necessary to analyze the fracture performance of rubber concrete under different temperature and humidity environments to reveal The mechanism of the fracture performance of rubber concrete affected by temperature and humidity can prolong the service life of concrete structures. However, there are still few analyzes on the fracture performance mechanism of rubber concrete, and the analysis process is not scientific and rigorous enough. Most of them are not representative, therefore, the present invention proposes a method for analyzing the fracture performance of rubber concrete based on temperature and humidity changes to solve the problems in the prior art

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