Experimental Study on Mechanical Properties of Granite after High Temperature

The experimental studies on the mechanical properties of granite after different high temperature were conducted by hydraulic servo testing system.The influence of different high temperatures on peak stress,peak strain,elastic modulus,stress-strain curve of granite was analyzed.The test results show that the mechanical properties of granite after high temperature deteriorated with the rise of temperature,and the peak stress and elastic modulus decreased with the rise of temperature,while the peak strain increased gradually.And the regularity and mechanism of peak stress,peak strain,elastic modulus,stress-strain curve of granite affected by different temperature was analyzed.And regression formulas of the regularity and mechanism of peak stress,peak strain and elastic modulus changing with different temperature were obtained by regression analysis.