Rehabilitation of rectangular simply supported RC beams with shear deficiencies using CFRP composites

Ahmed Khalifa; Antonio Nanni

doi:10.1016/S0950-0618(02)00002-8

Rehabilitation of rectangular simply supported RC beams with shear deficiencies using CFRP composites

Ahmed Khalifa, Antonio Nanni

Research output: Contribution to journal › Article

191 Scopus citations

Abstract

The present study examines the shear performance and modes of failure of rectangular simply supported reinforced concrete (RC) beams designed with shear deficiencies. These members were strengthened with externally bonded carbon fiber reinforced polymer (CFRP) sheets and evaluated in the laboratory. The experimental program consisted of twelve full-scale RC beams tested to fail in shear. The variables investigated within this program included steel stirrups, and the shear span-to-effective depth ratio, as well as amount and distribution of CFRP. The experimental results indicated that the contribution of externally bonded CFRP to the shear capacity was significant. The shear capacity was also shown to be dependent upon the variables investigated. Test results were used to validate a shear design approach, which showed conservative and acceptable predictions.

Original language	English (US)
Pages (from-to)	135-146
Number of pages	12
Journal	Construction and Building Materials
Volume	16
Issue number	3
DOIs	https://doi.org/10.1016/S0950-0618(02)00002-8
State	Published - Apr 1 2002
Externally published	Yes

Keywords

Carbon fiber reinforced polymer
Rehabilitation
Shear

ASJC Scopus subject areas

Civil and Structural Engineering
Materials Science(all)

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10.1016/S0950-0618(02)00002-8

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Khalifa, A., & Nanni, A. (2002). Rehabilitation of rectangular simply supported RC beams with shear deficiencies using CFRP composites. Construction and Building Materials, 16(3), 135-146. https://doi.org/10.1016/S0950-0618(02)00002-8

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AB - The present study examines the shear performance and modes of failure of rectangular simply supported reinforced concrete (RC) beams designed with shear deficiencies. These members were strengthened with externally bonded carbon fiber reinforced polymer (CFRP) sheets and evaluated in the laboratory. The experimental program consisted of twelve full-scale RC beams tested to fail in shear. The variables investigated within this program included steel stirrups, and the shear span-to-effective depth ratio, as well as amount and distribution of CFRP. The experimental results indicated that the contribution of externally bonded CFRP to the shear capacity was significant. The shear capacity was also shown to be dependent upon the variables investigated. Test results were used to validate a shear design approach, which showed conservative and acceptable predictions.

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