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Fracture analysis of a high-strength concrete and a high-strength steel-fiber-reinforced concrete

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Mechanics of Composite Materials Aims and scope

Abstract

This paper addresses the use of R-curves to study the fracture behavior of high-strength concrete and steel-fiber-reinforced concrete subjected to crack ing in a three-point bending configuration. The R-curves are modeled through an effective approach based on the equations of linear-elastic fracture mechanics (LEFM), which relates the applied load to the fundamental displacements of notched-through beams loaded monotonically. It is initially shown that, for quasi-brittle materials, the R-curves responses can be evaluated in a quasi-analytical way, using the load-crack mouth opening, the load-load line displacement, or exclusively the displacement responses obtained experimentally. Afterward, the methodology is used to obtain the fracture responses of high-strength and fiber-reinforced concretes, up to the final stages of rupture.

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Authors and Affiliations

  1. School of Engineering of São Carlos, University of São Paulo, Brazil

    L. E. T. Ferreira

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  1. L. E. T. Ferreira
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Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 43, No. 5, pp. 701–710, September–October, 2007.

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Ferreira, L.E.T. Fracture analysis of a high-strength concrete and a high-strength steel-fiber-reinforced concrete. Mech Compos Mater 43, 479–486 (2007). https://doi.org/10.1007/s11029-007-0045-8

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  • DOI: https://doi.org/10.1007/s11029-007-0045-8

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