ABSTRACT

Abstract This paper investigates experimentally the stress due to each or simultaneous action of volume changes resulting from autogenous shrinkage, hydration heat of cement and drying shrinkage, and the contribution of each volume change to total stress. Moreover, this paper verifies the stress analysis method based on the step-by-step method and models of mechanical properties of material comparing computed results with measured data. The analysis method can predict autogenous shrinkage stress and that combined with thermal stress in non-dried concrete with satisfactory accuracy. However, this method overestimates restrained stress in concrete starting to dry at an early age when basic creep coefficient is used. Keywords: Autogenous shrinkage, Beam theory, Creep, Drying shrinkage, FEM, High strength concrete, Hydration heat, Stress analysis.