极限抗拉强度
张力(地质)
材料科学
拉伸试验
巴(单位)
复合材料
拉伤
拉伸应变
单轴张力
抗压强度
结构工程
应力-应变曲线
变形(气象学)
工程类
地质学
医学
内科学
海洋学
作者
S. Swaddiwudhipong,H. R. Lu,T. H. Wee
标识
DOI:10.1016/s0008-8846(03)00231-x
摘要
The tensile strain capacity of concrete under uniaxial tension is investigated using the direct tension test method. The adopted method of testing improves the weak bond strength between the embedded bar and concrete and reduces the stress concentration at the end of the embedded bar. The method has overcome the difficulties in centralizing and aligning the two embedded bars in the specimens. Seven mixes of concrete were designed to study the effects of age, compressive strength and mineral admixture on the tensile strain capacity. The investigation shows that the tensile strain capacity of concrete is a relatively independent parameter. The average tensile strains at failure and at 90% failure load are 120 and 100 με, respectively. The corresponding characteristic tensile strain values at failure and at 90% failure load are 86 and 78 με, respectively.
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