Characteristics of the strength of ceramic waste sand concrete

The calculation on the residual capacity of RC beam post fire is on the premise that the member can use continue after repairing.The rectangle beam with single reinforcement be discussed,and the shear failure be neglected,started from analyzing the temperature field of member,a method be given to calculate the residual capacity of the RC member.In this method,the strengthen of the reinforcement be considered as invariant,and the original area of section be regarded as reduced.The numerical solution of the calculated example and the experiment value be compared,the result be matching well,so the appliance of the method be proved,and the theory base on the safe assessment and repair reinforcement of RC member post high temperature be supplied.