FRP composites for shear strengthening of reinforced concrete deep beams with openings

Tamer El Maaddawy; Sayed Sherif

doi:10.1016/j.compstruct.2008.06.022

FRP composites for shear strengthening of reinforced concrete deep beams with openings

Tamer El Maaddawy, Sayed Sherif

Department of Civil and Environmental Engineering

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

102 Citations (Scopus)

Abstract

This paper presents the results of a research work aimed at examining the potential use of externally bonded carbon fiber reinforced polymer (CFRP) composite sheets as a strengthening solution to upgrade reinforced concrete (RC) deep beams with openings. A total of 13 deep beams with openings were constructed and tested under four-point bending. Test specimen had a cross section of 80 × 500 mm and a total length of 1200 mm. Two square openings, one in each shear span, were placed symmetrically about the mid-point of the beam. Test parameters included the opening size, location, and the presence of the CFRP sheets. The structural response of RC deep beams with openings was primarily dependent on the degree of the interruption of the natural load path. Externally bonded CFRP shear strengthening around the openings was found very effective in upgrading the shear strength of RC deep beams. The strength gain caused by the CFRP sheets was in the range of 35-73%. A method of analysis for shear strength prediction of RC deep beams containing openings strengthened with CFRP sheets was studied and examined against test results.

Original language	English
Pages (from-to)	60-69
Number of pages	10
Journal	Composite Structures
Volume	89
Issue number	1
DOIs	https://doi.org/10.1016/j.compstruct.2008.06.022
Publication status	Published - Jun 2009

Keywords

Concrete
Deep beams
FRP
Openings
Strengthening

ASJC Scopus subject areas

Ceramics and Composites
Civil and Structural Engineering

Access to Document

10.1016/j.compstruct.2008.06.022

Cite this

@article{732a0179cfb44e709e93b377c6634558,

title = "FRP composites for shear strengthening of reinforced concrete deep beams with openings",

abstract = "This paper presents the results of a research work aimed at examining the potential use of externally bonded carbon fiber reinforced polymer (CFRP) composite sheets as a strengthening solution to upgrade reinforced concrete (RC) deep beams with openings. A total of 13 deep beams with openings were constructed and tested under four-point bending. Test specimen had a cross section of 80 × 500 mm and a total length of 1200 mm. Two square openings, one in each shear span, were placed symmetrically about the mid-point of the beam. Test parameters included the opening size, location, and the presence of the CFRP sheets. The structural response of RC deep beams with openings was primarily dependent on the degree of the interruption of the natural load path. Externally bonded CFRP shear strengthening around the openings was found very effective in upgrading the shear strength of RC deep beams. The strength gain caused by the CFRP sheets was in the range of 35-73%. A method of analysis for shear strength prediction of RC deep beams containing openings strengthened with CFRP sheets was studied and examined against test results.",

keywords = "Concrete, Deep beams, FRP, Openings, Strengthening",

author = "{El Maaddawy}, Tamer and Sayed Sherif",

note = "Funding Information: The authors would like to express their appreciation to the Research Affairs at the UAE-University for the financial support of this project under fund grant # 02-01-7-11/08. The authors would like to thank the Undergraduate Research Assistants and the Laboratory Specialists at the UAE-University for their help throughout testing.",

year = "2009",

month = jun,

doi = "10.1016/j.compstruct.2008.06.022",

language = "English",

volume = "89",

pages = "60--69",

journal = "Composite Structures",

issn = "0263-8223",

publisher = "Elsevier BV",

number = "1",

}

TY - JOUR

T1 - FRP composites for shear strengthening of reinforced concrete deep beams with openings

AU - El Maaddawy, Tamer

AU - Sherif, Sayed

N1 - Funding Information: The authors would like to express their appreciation to the Research Affairs at the UAE-University for the financial support of this project under fund grant # 02-01-7-11/08. The authors would like to thank the Undergraduate Research Assistants and the Laboratory Specialists at the UAE-University for their help throughout testing.

PY - 2009/6

Y1 - 2009/6

N2 - This paper presents the results of a research work aimed at examining the potential use of externally bonded carbon fiber reinforced polymer (CFRP) composite sheets as a strengthening solution to upgrade reinforced concrete (RC) deep beams with openings. A total of 13 deep beams with openings were constructed and tested under four-point bending. Test specimen had a cross section of 80 × 500 mm and a total length of 1200 mm. Two square openings, one in each shear span, were placed symmetrically about the mid-point of the beam. Test parameters included the opening size, location, and the presence of the CFRP sheets. The structural response of RC deep beams with openings was primarily dependent on the degree of the interruption of the natural load path. Externally bonded CFRP shear strengthening around the openings was found very effective in upgrading the shear strength of RC deep beams. The strength gain caused by the CFRP sheets was in the range of 35-73%. A method of analysis for shear strength prediction of RC deep beams containing openings strengthened with CFRP sheets was studied and examined against test results.

AB - This paper presents the results of a research work aimed at examining the potential use of externally bonded carbon fiber reinforced polymer (CFRP) composite sheets as a strengthening solution to upgrade reinforced concrete (RC) deep beams with openings. A total of 13 deep beams with openings were constructed and tested under four-point bending. Test specimen had a cross section of 80 × 500 mm and a total length of 1200 mm. Two square openings, one in each shear span, were placed symmetrically about the mid-point of the beam. Test parameters included the opening size, location, and the presence of the CFRP sheets. The structural response of RC deep beams with openings was primarily dependent on the degree of the interruption of the natural load path. Externally bonded CFRP shear strengthening around the openings was found very effective in upgrading the shear strength of RC deep beams. The strength gain caused by the CFRP sheets was in the range of 35-73%. A method of analysis for shear strength prediction of RC deep beams containing openings strengthened with CFRP sheets was studied and examined against test results.

KW - Concrete

KW - Deep beams

KW - FRP

KW - Openings

KW - Strengthening

UR - http://www.scopus.com/inward/record.url?scp=61449163004&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=61449163004&partnerID=8YFLogxK

U2 - 10.1016/j.compstruct.2008.06.022

DO - 10.1016/j.compstruct.2008.06.022

M3 - Article

AN - SCOPUS:61449163004

SN - 0263-8223

VL - 89

SP - 60

EP - 69

JO - Composite Structures

JF - Composite Structures

IS - 1

ER -

FRP composites for shear strengthening of reinforced concrete deep beams with openings

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this