Effects of moisture evaporation (weight loss) on fracture properties of high performance concrete subjected to high temperatures

The weight loss used for assessing moisture migration in high performance concrete was continuously monitored during the heating process and its effects on the fracture properties of the concrete subjected to various heating temperatures and exposure times were investigated. ► Weight loss (WL) is linked to fracture properties of HPC at high temperatures. ► Fracture energy of hot and cold concrete had close relationships with WL. ► Modulus of rupture for hot and cold concrete had different trends with WL. ► Residual concrete strengths had two-stage decreasing trends with WL. ► Residual Young's modulus had a bi-linear decreasing relationship with WL.