Experimental study on mechanical properties of concrete under sub-high temperature cycles

Abstract Nuclear power plant containment, large storage tank, industrial cooling tower and some plants under high temperature will be subjected to the sub-high cycles from normal ~200°C. To explore durability of structural concrete, this paper carried out experimental research on mechanical properties concrete cyclic environment (below 200°C). The uniaxial compression test different strength was out. axial compressive grade ranged 20 MPa 70 MPa, changes in appearance feature with strengths after number times were recorded. evolution rules parameters such as Young’s Modulus, peak strength, strain, Poisson’s ratio are obtained through tests. influence cycle macroscopic studied. Moreover, prediction formulas modulus established according data.