Study on concrete damage after fire high temperature

摘要

In order to investigate the effect of temperature (from normal atmospheric temperature to 1000 deg C) caused by heat on strength and deformation of concrete, a total of 86 specimens have been performed under different temperature conditions. The content consists of compressive and tensile strength, axial compressive strength and elasticity modulus of concrete exposed to heat and then cooled in air. The regularity and mechanism of change in concrete on strength and deformation after high temperature are analyzed, Emphasis is laid on the relationship between temperature and strength and deformation, and the relevant formulas are proposed in this paper.