缺口对混凝土单轴直接拉伸应力-应变全曲线的影响

Influence of Specimen Notches on the Test Results of Concrete in Uniaxial Direct Tension

对比分析了混凝土单轴直接拉伸应力-应变全曲线试验中缺口试件和无缺口试件的试验结果的差异,并对其原因进行了探讨.结果表明:试件缺口对应力-应变全曲线试验结果存在一定的影响,即该试验采用无缺口试件是非常必要的.

In this paper, the test results of stressstrain curves in uniaxial direct tension of notched specimens are compared with that of unnotched specimens, and the differences between two types of specimens are discussed. It is concluded that because the notch will have some effect on the test result of stressstrain curve, the unnotched specimen is suggested to use in the uniaxial direct tensile test of concrete.