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Bilinear tension softening diagrams of concrete mixes corresponding to their size-independent specific fracture energy

Murthy, Ramachandra A and Karihaloo, BL and Iyer, Nagesh R and Prasad, Raghu BK (2013) Bilinear tension softening diagrams of concrete mixes corresponding to their size-independent specific fracture energy. In: CONSTRUCTION AND BUILDING MATERIALS, 47 . pp. 1160-1166.

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Official URL: http://dx.doi.org/10.1016/j.conbuildmat.2013.06.00...

Abstract

The study of the fracture behaviour of concrete structures using the fictitious crack model requires two fracture properties of the concrete mix, namely, the size-independent specific fracture energy G(F). and the corresponding tension softening relation sigma(w) between the residual stress carrying capacity sigma and the crack opening w in the fracture process zone ahead of a real crack. In this paper, bi-linear tension softening diagrams of three different concrete mixes, ranging in compressive strength from 57 to 122 MPa whose size-independent specific fracture energy has been previously determined, have been constructed in an inverse manner based on the concept of a non-linear hinge from the load-crack mouth opening plots of notched three-point bend beams. (C) 2013 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: copyright for this article belongs to Elsevier
Keywords: High strength concrete; Ultra high strength concrete; Fictitious crack model; Size independent specific fracture energy; Tensile stress; Crack width
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Depositing User: Id for Latest eprints
Date Deposited: 04 Nov 2013 06:30
Last Modified: 04 Nov 2013 06:30
URI: http://eprints.iisc.ac.in/id/eprint/47673

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