Determining double-K fracture parameters of concrete for compact tension and wedge splitting tests using weight function
✍ Scribed by Shailendra Kumar; S.V. Barai
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 364 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0013-7944
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✦ Synopsis
The paper presents use of universal form of weight functions for determining the double-K fracture parameters K ini IC and K un IC on compact test and wedge splitting test specimens. The proposed method enables to obtain a closed form expression of cohesion toughness of concrete specimens. A comparison with existing analytical method shows that the weight function method for determination of double-K fracture parameters yields results without any appreciable error. Significant influence of initial notch to depth (a 0 /D) ratio on the double-K fracture parameters is not also observed. Finally, a possible definition of brittleness of concrete using double-K fracture parameters is proposed.