A multiscale model for post-peak softening response of concrete and the role of microcracks in the interfacial transition zone

Simon, Keerthy M and Kishen, J M Chandra (2018) A multiscale model for post-peak softening response of concrete and the role of microcracks in the interfacial transition zone. In: ARCHIVE OF APPLIED MECHANICS, 88 (7). pp. 1105-1119.

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Abstract

The effect of microcracks ahead of a macrocrack on the post-peak behavior of concrete-like quasi-brittle material is studied. The critical length of a microcrack is estimated by considering a small element near the macrocrack tip and defining the critical crack opening displacement of the microcrack that exist in the interface region between the aggregate and cement paste. A fracture model is proposed to predict the post-peak response of plain concrete. This model is validated using the experimental results for normal-strength, high-strength and self-consolidating concretes available in the literature. Through a sensitivity analysis, it is observed that the elastic modulus of concrete and the fracture toughness of the interface have a substantial influence on the critical microcrack length.

Item Type:	Journal Article
Publication:	ARCHIVE OF APPLIED MECHANICS
Publisher:	SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Additional Information:	Copy right of this article belong to SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	02 Jul 2018 14:50
Last Modified:	02 Jul 2018 14:50
URI:	http://eprints.iisc.ac.in/id/eprint/60115

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