What question did this study set out to answer?

To evaluate the shear and bending behavior of high-strength concrete beams reinforced with various fiber types across different cross-sectional depths and to develop a predictive analytical model.

February 1, 2000Journal of Structural Engineering

Beams of Fibrous Concrete in Shear and Bending: Experiment and Model

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Authors

KNKeivan NoghabaiLuleå University of Technology

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Implication

Experimental study demonstrates size-dependent shear and bending performance in fiber-reinforced high-strength concrete beams, indicating fibers can match conventional stirrups.

Key Points

To evaluate the shear and bending behavior of high-strength concrete beams reinforced with various fiber types across different cross-sectional depths and to develop a predictive analytical model.
Tested high-strength concrete beams (compressive strength fcc up to 90 MPa) with metallic and nonmetallic fiber additions up to 1% by volume across four member depths: 250 mm, 300 mm, 500 mm, and 700 mm.
Developed a nonlinear truss model to predict the load-carrying capacity of beams without shear stirrups.
Steel fibers did not improve load capacity in 250 mm deep beams, improved capacity in select 300 mm beams, enhanced toughness in 500 mm beams, but offered insufficient resistance in 700 mm beams.
Steel fibers performed competitively against conventional stirrups, and the nonlinear truss model provided accurate capacity predictions for stirrup-free beams up to 500 mm in depth.

Cite This Study

Keivan Noghabai (2000) studied this question.

synapsesocial.com/papers/6a8ce00ef37eeef560ff14ba https://doi.org/10.1061/(asce)0733-9445(2000)126:2(243)

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Implication

Experimental study demonstrates size-dependent shear and bending performance in fiber-reinforced high-strength concrete beams, indicating fibers can match conventional stirrups.

Beams of Fibrous Concrete in Shear and Bending: Experiment and Model

Discussion

Member takes

Implication

Key Points

Cite This Study

Beams of Fibrous Concrete in Shear and Bending: Experiment and Model

Discussion

Member takes

Implication

Key Points

Cite This Study

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