Influence of age and cure on fracture properties of concrete subjected to high temperature heating

Abstract

This paper reports on the investigation into the influence of age and cure on fracture properties of concrete subjected to the effect of high temperature heating up to 800°C. Wedge splitting tests were conducted to measure the load versus crack mouth opening displacement curves. The initial cohesive stress and fracture energy were estimated by the inverse analysis of tension softening diagram calculated by the load versus crack mouth opening displacement curves. As a result, the effect of age and cure on the fracture properties of concrete subjected to high temperature heating was discussed.