Fiber Concrete Deep Beams in Shear

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Title: Fiber Concrete Deep Beams in Shear

Author(s): R. Narayan and I. Y. S. Darwish

Publication: Structural Journal

Volume: 85

Issue: 2

Appears on pages(s): 141-149

Keywords: cracking (fracturing); deep beams; deflection; ductility; fiber reinforced concretes; metal fibers; reinforced concrete; spalling; shear strength; shear stress; web reinforcement; Structural Research

Date: 3/1/1988

Abstract:
Results of tests on 12 reinforced concrete deep beams, including 11 containing steel fibers provided to act as web reinforcement, are reported. Three parameters were varied in the study, namely, the volume fraction of fibers, shear span-to-depth ratio, and the concrete compressive strength. The effects of fiber incorporation on deflections, strains, crack widths, crack patterns, failure modes, cracking shear load, and ultimate shear load have been examined. Resistance to shear stresses and spalling have been found to be improved by the inclusion of fibers. Based on these investigations, a rapid method of computing the ultimate shear capacity of a steel fiber-concrete deep beam is suggested.