Shear strengthening of RC deep beams with large openings using carbon fiber reinforced polymers (CFRP)

This research deals with the experimental study of the behaviour of reinforced concrete deep beams with or without large rectangular openings as well as openings strengthened using externally bonded Carbon Fiber Reinforced Polymer (CFRP) composites in shear. The structural behaviour, including the l...

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Main Author:	Tong, Foo Sheng
Format:	Undergraduates Project Papers
Language:	English English English
Published:	2015
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/11949/ http://umpir.ump.edu.my/id/eprint/11949/ http://umpir.ump.edu.my/id/eprint/11949/1/FKKSA%20-%20TONG%20FOO%20SHENG%20%28CD9293%29.pdf http://umpir.ump.edu.my/id/eprint/11949/2/FKKSA%20-%20TONG%20FOO%20SHENG%20%28CD9293%29%20-%20CHAP%201.pdf http://umpir.ump.edu.my/id/eprint/11949/3/FKKSA%20-%20TONG%20FOO%20SHENG%20%28CD9293%29%20-%20CHAP%203.pdf

id	ump-11949
recordtype	eprints
spelling	ump-119492016-03-17T02:00:41Z http://umpir.ump.edu.my/id/eprint/11949/ Shear strengthening of RC deep beams with large openings using carbon fiber reinforced polymers (CFRP) Tong, Foo Sheng TA Engineering (General). Civil engineering (General) This research deals with the experimental study of the behaviour of reinforced concrete deep beams with or without large rectangular openings as well as openings strengthened using externally bonded Carbon Fiber Reinforced Polymer (CFRP) composites in shear. The structural behaviour, including the load deflection, cracking patterns, failure mode, and effectiveness of the CFRP wraps were investigated. A total of four (4) specimens of beams with compressive strength of 35 MPa were tested to induce shear failure under 4 points loading test, which included one solid deep beam acted as a control beam (CB), one of which was tested without strengthening (US-BRO), and the remaining beams were strengthened with CFRP wraps in varying configurations around the opening (S-BRO-1, S-BRO-2). The beam had a cross section of 120 mm in width and 600 mm in depth as well as a length of 2400 mm. All the test specimens had a same geometry, main reinforcement arrangements and openings location. All the preparatory works of specimen materials were conducted in Laboratory FKASA. The examined parameter was the effect of configurations of the CFRP wraps used for the shear strengthening. The inclusion of un-strengthened large rectangular openings in the shear zone of a reinforced concrete deep beam leads to a reduction of ultimate beam strength by approximately 70%. The application of CFRP wraps with the presented strengthening configurations restricted the propagation of the diagonal crack and effectively increases ultimate load-carrying capacity as well as the ductility of the beam. The strength re-gains by U-shaped strengthening configuration around the openings was approximately 36% as compared to the beam with un-strengthened openings. However, the deep beam with U-shaped CFRP with horizontal fiber strengthened at the top and bottom chords of the openings were not capable to restore the control beam’s original structural strength remarkably. The beam only managed to re-gain about 41% of the control beam’s capacity. 2015-06 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/11949/1/FKKSA%20-%20TONG%20FOO%20SHENG%20%28CD9293%29.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/11949/2/FKKSA%20-%20TONG%20FOO%20SHENG%20%28CD9293%29%20-%20CHAP%201.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/11949/3/FKKSA%20-%20TONG%20FOO%20SHENG%20%28CD9293%29%20-%20CHAP%203.pdf Tong, Foo Sheng (2015) Shear strengthening of RC deep beams with large openings using carbon fiber reinforced polymers (CFRP). Faculty of Civil Engineering & Earth Resources, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:92192&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Tong, Foo Sheng Shear strengthening of RC deep beams with large openings using carbon fiber reinforced polymers (CFRP)
description	This research deals with the experimental study of the behaviour of reinforced concrete deep beams with or without large rectangular openings as well as openings strengthened using externally bonded Carbon Fiber Reinforced Polymer (CFRP) composites in shear. The structural behaviour, including the load deflection, cracking patterns, failure mode, and effectiveness of the CFRP wraps were investigated. A total of four (4) specimens of beams with compressive strength of 35 MPa were tested to induce shear failure under 4 points loading test, which included one solid deep beam acted as a control beam (CB), one of which was tested without strengthening (US-BRO), and the remaining beams were strengthened with CFRP wraps in varying configurations around the opening (S-BRO-1, S-BRO-2). The beam had a cross section of 120 mm in width and 600 mm in depth as well as a length of 2400 mm. All the test specimens had a same geometry, main reinforcement arrangements and openings location. All the preparatory works of specimen materials were conducted in Laboratory FKASA. The examined parameter was the effect of configurations of the CFRP wraps used for the shear strengthening. The inclusion of un-strengthened large rectangular openings in the shear zone of a reinforced concrete deep beam leads to a reduction of ultimate beam strength by approximately 70%. The application of CFRP wraps with the presented strengthening configurations restricted the propagation of the diagonal crack and effectively increases ultimate load-carrying capacity as well as the ductility of the beam. The strength re-gains by U-shaped strengthening configuration around the openings was approximately 36% as compared to the beam with un-strengthened openings. However, the deep beam with U-shaped CFRP with horizontal fiber strengthened at the top and bottom chords of the openings were not capable to restore the control beam’s original structural strength remarkably. The beam only managed to re-gain about 41% of the control beam’s capacity.
format	Undergraduates Project Papers
author	Tong, Foo Sheng
author_facet	Tong, Foo Sheng
author_sort	Tong, Foo Sheng
title	Shear strengthening of RC deep beams with large openings using carbon fiber reinforced polymers (CFRP)
title_short	Shear strengthening of RC deep beams with large openings using carbon fiber reinforced polymers (CFRP)
title_full	Shear strengthening of RC deep beams with large openings using carbon fiber reinforced polymers (CFRP)
title_fullStr	Shear strengthening of RC deep beams with large openings using carbon fiber reinforced polymers (CFRP)
title_full_unstemmed	Shear strengthening of RC deep beams with large openings using carbon fiber reinforced polymers (CFRP)
title_sort	shear strengthening of rc deep beams with large openings using carbon fiber reinforced polymers (cfrp)
publishDate	2015
url	http://umpir.ump.edu.my/id/eprint/11949/ http://umpir.ump.edu.my/id/eprint/11949/ http://umpir.ump.edu.my/id/eprint/11949/1/FKKSA%20-%20TONG%20FOO%20SHENG%20%28CD9293%29.pdf http://umpir.ump.edu.my/id/eprint/11949/2/FKKSA%20-%20TONG%20FOO%20SHENG%20%28CD9293%29%20-%20CHAP%201.pdf http://umpir.ump.edu.my/id/eprint/11949/3/FKKSA%20-%20TONG%20FOO%20SHENG%20%28CD9293%29%20-%20CHAP%203.pdf
first_indexed	2023-09-18T22:13:03Z
last_indexed	2023-09-18T22:13:03Z
_version_	1777415155461652480

Shear strengthening of RC deep beams with large openings using carbon fiber reinforced polymers (CFRP)

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