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Influence of freeze-thaw damage gradient on stress-strain relationship of stressed concrete
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作者 Xiguang LIU yongjie lei +2 位作者 Yihao SUN Jiali ZHOU Ditao NIU 《Frontiers of Structural and Civil Engineering》 SCIE EI CSCD 2023年第9期1326-1340,共15页
Freeze-thaw damage gradients lead to non-uniform degradation of concrete mechanical properties at different depths.A study was conducted on the stress-strain relationship of stressed concrete with focus on the freeze-... Freeze-thaw damage gradients lead to non-uniform degradation of concrete mechanical properties at different depths.A study was conducted on the stress-strain relationship of stressed concrete with focus on the freeze-thaw damage gradient.The effects of relative freeze-thaw depths,number of freeze-thaw cycles(FTCs)and stress ratios on the stress-strain curves of concrete were analyzed.The test results demonstrated that freeze-thaw damage was more severe in the surface layers of concrete than in the deeper layers.The relative peak stress and strain of concrete degraded bilinearly with increasing depth.The stress-strain relationship of stressed concrete under FTC was established,and it was found to agree with the experimental results. 展开更多
关键词 freeze-thaw damage stress ratios stress-strain relationship damage variable
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