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http://dx.doi.org/10.4334/JKCI.2009.21.4.523

Improved Biaxial Flexure Test (BFT) for Concrete with the Optimum Specimen Geometry  

Zi, Gooang-Seup (School of Civil, Environmental and Architectural Engineering, Korea University)
Kim, Ji-Hwan (School of Civil, Environmental and Architectural Engineering, Korea University)
Oh, Hong-Seob (Dept. of Civil Engineering, Jinju National University)
Publication Information
Journal of the Korea Concrete Institute / v.21, no.4, 2009 , pp. 523-530 More about this Journal
Abstract
For designing concrete structures, engineers are provided data from unidirectional flexure test in most cases. But real structural components such as pavements and deck panel are subjected to multiaxial stress throughout their body. Therefore, biaxial flexure test for concrete may be considered as a gage of the performance of concrete in service. In this paper, we propose the optimum biaixial flexture test (BFT) to measure the biaxial flexural strength of concrete. This method are an improved version of the ring-on-ring test which have been used extensively in the fields of ceramics and biomaterials. The optimum geometry of the test specimen was determined by using a three-dimensional finite element analysis. A series of test data obtained from the proposed test method is provided to show that the proposed optimum biaxial flexure test method can be used to identify the biaxial tensile strength of concrete.
Keywords
biaxial flexural test (BFT); tensile strength; crack; fracture;
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Times Cited By KSCI : 2  (Citation Analysis)
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