Laboratory investigation on engineering mechanics properties of granite after various heating/cooling treatments

The purpose of this study is to investigate the engineering mechanical properties of granite after various heating/ cooling treatments through laboratory investigation. Granite specimens were heated at different temperatures (25, 200, 400, 500, 600, and 800 degrees C) and cooled by two methods ( natural cooling and water cooling) to investigate the change patterns of engineering mechanical properties of granite materials after heating/ cooling treatments, including surface hardness, uniaxial compressive strength, modulus of elasticity, peak strain, and point load strength. The damage mechanisms of granite under different heating/cooling treatments were also revealed. Finally, the correlation between uniaxial compressive strength, point load strength, and surface hardness were analyzed by linear and nonlinear fitting methods. The results showed that the strength index of granite can be well evaluated by the hardness index, which has important engineering significance.

Automated summary

The purpose of this study is to investigate the changes in engineering mechanical properties of granite after various heating/cooling treatments, and to reveal the damage mechanisms. The results show that the strength of granite can be evaluated by the hardness index, which is of great engineering significance.