Normal‐ and High‐Strength Fiber‐Reinforced Concrete under Compression
Publication: Journal of Materials in Civil Engineering
Volume 4, Issue 4
Abstract
TO use steel fiber‐reinforced concrete in structural applications, the complete stress‐strain behavior of the material in compression is needed. This paper presents the experimental stress‐strain behavior of fiber‐reinforced concrete with compressive strength ranging from 5 ksi to 12 ksi (35 MPa to 85 MPa). Three fiber volume fractions of 50 lb/cu yd, 75 lb/cu yd, and 100 lb/cu yd ( and ) and three aspect ratios of 60, 75, and 100 are investigated. The influence of the fiber‐reinforcing parameters on the peak stress, corresponding strain, the secant modulus of elasticity, the toughness of concrete, and the curve shape are reported. A simple equation is proposed to predict the complete stress‐strain curve. Addition of steel fibers to concrete with or without silica fume effectively increases the toughness of such concrete. A marginal increase in the compressive strength, the strain corresponding to peak stress, and the secant modulus of elasticity is also obtained. The increase of silica‐fume content renders the fiber‐reinforced concrete more brittle then non‐silica‐fume concrete. The equation proposed to generate the complete stress‐strain curve for non‐silica‐fume fiber‐reinforced concrete provides a good correlation between predicted and experimental results.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 4 • Issue 4 • November 1992
Pages: 415 - 429
Copyright
Copyright © 1992 ASCE.
History
Published online: Nov 1, 1992
Published in print: Nov 1992
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