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Fracture Properties of High Strength Concrete Disk with Center-Crack
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 Title & Authors
Fracture Properties of High Strength Concrete Disk with Center-Crack
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 Abstract
It is difficult to obtain accurate fracture toughness values using three point bending test(TPB) proposed by RILEM committees because the shape of load-deflection curve is irregular and final crack propagation occurs after some slow stable cracking. However, fracture toughness is easily obtained from crack initiation load in the disk test. In this paper, the fracture properties of high strength concrete disks with center-crack was investigated. For this purpose, the experimental results were compared with the results by finite element analysis(FEA). And the experimental fracture locus was compared with theoretical fracture locus. Also, the results of fracture properties for the degree of concrete strength are presented. It is concluded from this study that results from FEA with maximum stress theory were compared well with the results from experiment. And the degree of concrete strength was contributed to the crack initiation load and fracture toughness, but was not contributed to the failure angle. Also, The discrepancy of fracture locus between the maximum stress theory and the experiment for concrete is considered to depend upon a large energy requirement for inducing the mixed-mode and sliding mode fractures.
 Keywords
concrete disk;fracture locus;fracture toughness;
 Language
Korean
 Cited by
 References
1.
Journal of Engineering Materials and Technology, 1978. vol.100. pp.175-182

2.
International Journal of Fracture, 1982. vol.18. 4, pp.79-291

3.
Fracture Mechanics of Concrete Structures, 1993. pp.719-726

4.
Fracture Mechanics of Concrete, 1995.

5.
한국콘크리트학회 논문집, 2000. vol.12. 2, pp.63-69

6.
ASME, Journal of Basic Engineering, 1963. vol.85. pp.519-527

7.
부산대학교 대학원 토목공학과 강의노트, 1999. pp.1-390

8.
대한토목학회논문집, 1995. vol.15. 2, pp.357-365