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

Ramachandra Murthy, A., Karihaloo, Bhushan Lal, Iyer, Nagesh R. and Raghu Prasad, B. K. 2013. Bilinear tension softening diagrams of concrete mixes corresponding to their size-independent specific fracture energy. Construction and Building Materials 47 , pp. 1160-1166. 10.1016/j.conbuildmat.2013.06.004

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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 GF, and the corresponding tension softening relation σ(w) between the residual stress carrying capacity σ 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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Uncontrolled Keywords: High strength concrete; Ultra high strength concrete; Fictitious crack model; Size independent specific fracture energy; Tensile stress; Crack width
Publisher: Elsevier
ISSN: 0950-0618
Last Modified: 04 Jun 2017 05:26
URI: http://orca.cf.ac.uk/id/eprint/51328

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