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일축 및 이축 휨인장강도의 실험적 비교The Experimental Comparison of the Uniaxial and Biaxial Tensile Strengths of Concretes
- Other Titles
- The Experimental Comparison of the Uniaxial and Biaxial Tensile Strengths of Concretes
- Issue Date
- 2008
- Publisher
- 한국콘크리트학회
- Keywords
- biaxial flexural fracture strength; flexural tensile strength; new test method; experimental data; biaxial flexural fracture strength; flexural tensile strength; new test method; experimental data; 이축 휨파괴강도; 일축 휨인장강도 새로운 이축 휨강도 실험 방법; 실험 결과
- Citation
- 콘크리트학회 논문집, v.20, no.2, pp.139 - 146
- Indexed
- KCI
- Journal Title
- 콘크리트학회 논문집
- Volume
- 20
- Number
- 2
- Start Page
- 139
- End Page
- 146
- ISSN
- 1229-5515
- 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 (2007) and Zi et al. (2007), 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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