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Title |
The Experimental Comparison of the Uniaxial and Biaxial Tensile Strengths of Concretes
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Keywords |
이축 휨파괴강도 ; 휨인장강도 ; 새로운 시험 방법 ; 실험 결과 ; biaxial flexural fracture strength ; flexural tensile strength ; new test method ; experimental data |
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Abstract |
The characteristics of the biaxial flexural tensile strength of concretes was compared to that of the uniaxial strength. The uniaxial and biaxial strengths in this study were obtained from the classical modulus of rupture test and the biaxial flexural test recently developed by Zi and Oh and Zi et al., respectively. Three different sizes were considered to investigate the effect of the size of aggregates. To estimate the stochastic aspect of the strength,32 specimens were used for each test. The average biaxial flexural fracture strength was about 20% greater than the uniaxial test. At the same time, the coefficient of variation for the biaxial test was 18% greater than the uniaxial test. This means that the probability of the biaxial cracking can be greater than the uniaxial cracking
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