Quantitative analysis method for rubber concrete microstructure

Abstract

The invention discloses a quantitative analysis method for a rubber concrete microstructure. The quantitative analysis method comprises the steps of preparing a rubber concrete sample, treating the rubber concrete sample, observing the microstructure morphology of sample dices, measuring the pore structure of sample slices, and analyzing the relationship between the microstructure and macroscopicstrength. According to the invention, microstructure observation is carried out on the sample dices through a scanning electron microscope system; measuring the pore structure on the sample slices through a linear wire method; then, a hydraulic servo universal testing machine is used for carrying out a compressive strength test on the rubber concrete; therefore, the influence of the microstructureof the rubber concrete on the macroscopic strength of the rubber concrete is obtained through analysis of a microstructure test and a macroscopic mechanical performance test, and great help is provided for performance prediction and improvement of the rubber concrete in aspects of water conservancy, civil engineering, traffic and like; and the analysis method provided by the invention is scientific and rigorous, and conforms to the reality, and the analyzed conclusion are representative.

Description

technical field [0001] The invention relates to the technical field of material performance analysis, in particular to a quantitative analysis method for rubber concrete microstructure. 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 limits its engineering application to a certain ex...

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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] In order to promote the popularization and application of rubber concrete in practical engineering such as water conservancy, civil engineering, and transportation, it is necessary to analyze the structural strength and fracture performance of rubber concrete to reveal the mechanism of rubber concrete strength reduction and prolong the service life of concrete structures. There are still few analyzes on the strength mechanism of rubber concrete, and most of the analysis results are not representative. Because the macroscopic performance of material properties is often inseparable from its microstructure, the present invention proposes a quantitative analysis method for the microstructure of rubber concrete to solve the current problem. There are technical problems

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