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http://dx.doi.org/10.12652/Ksce.2013.33.3.901

An Experimental Study on Strength Properties, Size Effect, and Fatigue Behaviour of Concrete under Biaxial Flexural Stress State  

Zi, Goangseup (School of Civil, Environmental & Architectural Engineering, Korea University)
Kim, Jihwan (School of Civil, Environmental & Architectural Engineering, Korea University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.33, no.3, 2013 , pp. 901-907 More about this Journal
Abstract
In this study, flexural strength properties of concrete under biaxial stress state were experimentally investigated. Tests for size effect and fatigue behaviour of concrete under biaxial stress were carried out by the ASTM C 1550 and the biaxial flexure test(BFT). The results given by the biaxial tests were compared to those by the third-point bending test. Test results showed that biaxial flexural strengths obtained from the ASTM C 1550 and the biaxial flexure test are greater than the strength by the third-point bending test. As the size increases, the uniaxial and biaxial flexural strength decreases. However, the slope of the size effect of the biaxial strength was greater than that of the uniaxial strength. Finally, the fatigue response of concrete under the biaxial stress state was similar with that for uniaxial stress state.
Keywords
Biaxial flexural stress; Biaxial flexural strength; Biaxial flexure test; Size effect; Fatigue;
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