Variation Pattern of the Stress-Strain Curve of Concrete under Multifactor Coupling

The air shafts of coal mines contain solid, liquid, and gaseous substances that corrode concrete under conditions relatively high temperature humidity. coupling various factors decreases the strength thus bearing capacity shaft lining. In this study, corrosion tests were carried out by simulating complex environment a mine lining to study variation in stress-strain curve. For corroded specimens subjected very low stress, microcracks holes closed, generating large deformation, indicating severe corrosion. longer time was, gentler initial slope Finally, uniaxial compression constitutive model was established based on Weibull distribution three parameters, curve compared with experimental This can not only predict change high-strength but also provide theoretical reference for application an environment.