Shear strength of plated RC beams

M. H. Baluch; Y. N. Ziraba; A. K. Azad; A. M. Sharif; G. J. Al-Sulaimani; I. A. Basunbul

doi:10.1680/macr.1995.47.173.369

Shear strength of plated RC beams

M. H. Baluch, Y. N. Ziraba, A. K. Azad, A. M. Sharif, G. J. Al-Sulaimani, I. A. Basunbul

King Fahd University of Petroleum & Minerals

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Use of externally bonded plates to strengthen or repair damaged reinforced concrete (RC) beams and slabs has gained universal acceptance. However, questions remain regarding the possibility of a highly brittle mode of failure, referred to in the literature as shear failure for certain combinations of plate geometry and other parameters. The paper surveys available experimental evidence from laboratories in the UK and Saudi Arabia and identifies parameters that play a primary role in shear or concrete rip-off failure. It is shown that ultimate load for certain plated RC beams failing in shear is overestimated by the ACI expression for shear strength of unplated RC beams, because crack profile renders stirrups inefficacious. An expression is suggested for predicting the degree of efficiency of stirrups for use in the design of plated RC beams.

Original language	English
Pages (from-to)	369-374
Number of pages	6
Journal	Magazine of Concrete Research
Volume	47
Issue number	173
DOIs	https://doi.org/10.1680/macr.1995.47.173.369
State	Published - Dec 1995

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

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10.1680/macr.1995.47.173.369

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title = "Shear strength of plated RC beams",

abstract = "Use of externally bonded plates to strengthen or repair damaged reinforced concrete (RC) beams and slabs has gained universal acceptance. However, questions remain regarding the possibility of a highly brittle mode of failure, referred to in the literature as shear failure for certain combinations of plate geometry and other parameters. The paper surveys available experimental evidence from laboratories in the UK and Saudi Arabia and identifies parameters that play a primary role in shear or concrete rip-off failure. It is shown that ultimate load for certain plated RC beams failing in shear is overestimated by the ACI expression for shear strength of unplated RC beams, because crack profile renders stirrups inefficacious. An expression is suggested for predicting the degree of efficiency of stirrups for use in the design of plated RC beams.",

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T1 - Shear strength of plated RC beams

AU - Baluch, M. H.

AU - Ziraba, Y. N.

AU - Azad, A. K.

AU - Sharif, A. M.

AU - Al-Sulaimani, G. J.

AU - Basunbul, I. A.

PY - 1995/12

Y1 - 1995/12

N2 - Use of externally bonded plates to strengthen or repair damaged reinforced concrete (RC) beams and slabs has gained universal acceptance. However, questions remain regarding the possibility of a highly brittle mode of failure, referred to in the literature as shear failure for certain combinations of plate geometry and other parameters. The paper surveys available experimental evidence from laboratories in the UK and Saudi Arabia and identifies parameters that play a primary role in shear or concrete rip-off failure. It is shown that ultimate load for certain plated RC beams failing in shear is overestimated by the ACI expression for shear strength of unplated RC beams, because crack profile renders stirrups inefficacious. An expression is suggested for predicting the degree of efficiency of stirrups for use in the design of plated RC beams.

AB - Use of externally bonded plates to strengthen or repair damaged reinforced concrete (RC) beams and slabs has gained universal acceptance. However, questions remain regarding the possibility of a highly brittle mode of failure, referred to in the literature as shear failure for certain combinations of plate geometry and other parameters. The paper surveys available experimental evidence from laboratories in the UK and Saudi Arabia and identifies parameters that play a primary role in shear or concrete rip-off failure. It is shown that ultimate load for certain plated RC beams failing in shear is overestimated by the ACI expression for shear strength of unplated RC beams, because crack profile renders stirrups inefficacious. An expression is suggested for predicting the degree of efficiency of stirrups for use in the design of plated RC beams.

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DO - 10.1680/macr.1995.47.173.369

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SN - 0024-9831

VL - 47

SP - 369

EP - 374

JO - Magazine of Concrete Research

JF - Magazine of Concrete Research

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ER -

Shear strength of plated RC beams

Abstract

ASJC Scopus subject areas

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