The thermal expansion of concrete under constant load and creep

The thermal expansion of concrete under constant load and creep

Abstract

Concrete structures and its members are under constant multi-axial stress and exposed to various temperatures. The purpose of this study is to clarify the thermal expansion of plain concrete under constant multi-axial stress. The thermal expansion of concrete between 20C and 100C, under constant compressive stress including tri-axial loading can be concluded to be equal to the sum of elastic deformation caused by external forces, the thermal expansion without external load and creep strain. The thermal expansion of air dried concrete and water saturated concrete is smaller than the thermal expansion of pre-heated concrete.