Stress–strain–temperature relationship for concrete

When concrete structures are subjected to load and temperature simultaneously, it is essential take into account the coupled effects between stress expansion. However, due incomplete understanding, such have only been incorporated current Eurocode 2 (EC2) stress–strain curves by means of empirical correlations. These correlations at different target temperatures presented in tables that do not allow clearly identify correlation chosen obtain specific values. A further limitation these relationships cannot be used evaluate performance during cooling phase. In this paper, a physically-based model expansion define strain corresponding compressive strength, thus develop simple formulation for stress–strain–temperature relationship concrete. The results then compared with EC2 table. expression developed paper successfully agrees heating More importantly, proposed can also applicable design purposes