Triaxial compressive strength of air-entrained concrete after freeze–thaw cycles

The aim of this study is to characterize the behavior of air-concrete under triaxial compression with stress ratio α2 = σ2 : σ3 = 1 : 1, while changing stress ratio α1 = σ1 : σ3 from 0 to 0.2 after different cycles of freeze–thaw. 100 mm × 100 mm × 100 mm concrete cubes were tested in the experiment. Based on the experiment data, the influence of the stress ratio α1 = σ1 : σ3 and the number of freeze–thaw cycles on the ultimate compressive strength σ3 are analyzed respectively. A failure criterion expressed in terms of octahedral stress with consideration of the influence of the freeze–thaw cycles is proposed.