INFLUENCE OF SUSTAINED LOAD AND DRYING SHRINKAGE OF CONCRETE ON TENSION STIFFNESS OF REINFORCED CONCRETE MEMBERS

Abstract

 This study focuses on the tension stiffness of reinforced concrete members, which is significant for predicting time-dependent of crack width and deflection of reinforced concrete members. The influences of sustained load and drying on reinforced concrete members were clarified through systematic uniaxial tension tests on reinforced concrete members in which drying shrinkage before loading, sustained load, and combination of sustained load and drying shrinkage were investigated. The values of strain representing the influences of shrinkage and creep in the formula of crack width by Japan Society of Civil Engineers standard specification were reassessed by similar strain based on the test results.