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Title: Shear and Flexural Behavior of Brick-Aggregate Concrete Beams without Web Reinforcement

Author(s): Ali A. Akhtaruzzaman and Abul Hasnat

Publication: Journal Proceedings

Volume: 83

Issue: 2

Appears on pages(s): 284-289

Keywords: aggregates; beams (supports); compressive strength; crushed brick;deflection; diagonal tension; failure; flexural strength; span-depth ratio; shear strength; web reinforcement.

DOI: 10.14359/10418

Date: 3/1/1986

Forty-eight reinforced concrete rectangular beams made with crushed brick as aggregate and containing no web reinforcement were tested in shear and flexure under two-point loading. The variables were concrete strength and shear span to effective depth ratio. Five different failure modes were observed. The beams exhibited higher shear strength than those of normal weight concrete beams computed on the basis of the equation given by the 1983 ACI Building Code. An empirical relation has been suggested to predict the shear strength of brick-aggregate concrete beams without web reinforcement. For beams failing in flexure, the experimental moment capacities were found to be in close agreement with the computed values. Experimental midspan deflections were compared with theoretical deflections calculated in accordance with the equations given by the 1983 ACI Building Code. The variations were found to be within the limits reported for normal weight concrete beams.


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