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http://dx.doi.org/10.1007/s40069-016-0139-6

Determination of Double-K Fracture Parameters of Concrete Using Split-Tension Cube: A Revised Procedure  

Pandey, Shashi Ranjan (Department of Civil Engineering, National Institute of Technology)
Kumar, Shailendra (Department of Civil Engineering, Institute of Technology, Guru Ghasidas Vishwavidyalaya (A Central University))
Srivastava, A.K.L. (Department of Civil Engineering, National Institute of Technology)
Publication Information
International Journal of Concrete Structures and Materials / v.10, no.2, 2016 , pp. 163-175 More about this Journal
Abstract
This paper presents a revised procedure for computation of double-K fracture parameters of concrete split-tension cube specimen using weight function of the centrally cracked plate of finite strip with a finite width. This is an improvement over the previous work of the authors in which the determination of double-K fracture parameters of concrete for split-tension cube test using weight function of the centrally cracked plate of infinite strip with a finite width was presented. In a recent research, it was pointed out that there are great differences between a finite strip and an infinite strip regarding their weight function and the solution of infinite strip can be utilized in the split-tension specimens when the notch size is very small. In the present work, improved version of LEFM formulas for stress intensity factor, crack mouth opening displacement and crack opening displacement profile presented in the recent research work are incorporated. The results of the double-K fracture parameters obtained using revised procedure and the previous work of the authors is compared. The double-K fracture parameters of split-tension cube specimen are also compared with those obtained for standard three point bend test specimen. The input data required for determining double-K fracture parameters for both the specimen geometries for laboratory size specimens are obtained using well known version of the Fictitious Crack Model.
Keywords
split-tension cube test; three point bend test; concrete fracture; double-K fracture parameters; weight function; cohesive stress; size-effect;
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Times Cited By KSCI : 3  (Citation Analysis)
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