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http://dx.doi.org/10.11112/jksmi.2006.10.3.185

Fracture Toughness of Concrete Brazilian Disk according to Maximum Size of Coarse Aggregate  

Lee, Seung-Hoon (부산대학교 토목공학과)
Kim, Hee-Sung (동서대학교 건설공학부)
Jang, Hee-Suk (부경대학교 건설공학부)
Jin, Chi-Sub (부산대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.10, no.3, 2006 , pp. 185-196 More about this Journal
Abstract
Fracture toughness is a material property for crack initiation and propagation in fracture mechanics. For mode I fracture toughness measurement in concrete, RILEM committees 89-FMT proposed three-point bend tests based on the two-parameter fracture model. But, there is no proposed test method as a standard for mixed mode test for now. And RILEM three-point bend test procedure is complicate. Therefore, in this study, brazilian disks of various size were designed as the concrete with a similar specified concrete strength and maximum size of coarse aggregate($G_{max}$) were respectively 20mm and 40mm. And mode I fracture toughness of brazilian disks was compared with that of RILEM three-point bend test. As a result, it was suggested appropriate size(thickness, diameter) and notch length ratio of brazilan disk on the $G_{max}$. And it was verified that stress intensity factors for mixed mode can be easily calculated with the disk specimen. Stress intensity factors of a concrete brazilian disk were evaluated with finite element analysis and five terms approximation for comparison.
Keywords
Fracture Toughness; RILEM; Brazilian Disk; Stress Intensity Factor;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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