Prevention of debonding failure of intermediate anchor to eliminate premature shear failure of flexurally strengthened reinforced concrete beams

This research proposed an optimal method of intermediate anchor to prevent premature debonding failure of anchor plate for eliminating premature shear failure of CFRP laminate flexurally strengthened reinforced concrete (RC) beam. In the experimental programme, seven RC beam specimens were prepared...

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Main Authors:	Alam, M.A., Jumaat, M.Z.
Format:	Article
Published:	2015
Subjects:	T Technology (General) TA Engineering (General). Civil engineering (General)
Online Access:	http://link.springer.com/article/10.1007%2Fs13369-015-1739-1 http://link.springer.com/article/10.1007%2Fs13369-015-1739-1 http://eprints.um.edu.my/15668/1/Prevention_of_Debonding_Failure_of_Intermediate_Anchor_to_Eliminate_Premature_Shear_Failure.pdf

id	um-15668
recordtype	eprints
spelling	um-156682017-10-04T08:06:00Z Prevention of debonding failure of intermediate anchor to eliminate premature shear failure of flexurally strengthened reinforced concrete beams Alam, M.A. Jumaat, M.Z. T Technology (General) TA Engineering (General). Civil engineering (General) This research proposed an optimal method of intermediate anchor to prevent premature debonding failure of anchor plate for eliminating premature shear failure of CFRP laminate flexurally strengthened reinforced concrete (RC) beam. In the experimental programme, seven RC beam specimens were prepared which included un-strengthened control beam and flexurally strengthened beams with CFRP laminate. The flexurally strengthened beams were further shear strengthened using L-shaped intermediate anchors based on proposed and conventional methods. The experimental results of specimens were compared with the numerical results. Theoretical model had also been proposed to predict the debonding failure of intermediate anchors. Results showed that the anchors obtained based on the proposed design guideline prevented premature debonding failure of anchor plates completely and thus, the proposed intermediate anchored strengthened beams did not show premature shear failures. Whereas beams having the anchor plates based on conventional method failed by premature debonding of anchor plates followed by premature shear. The proposed intermediate anchors significantly increased the ultimate loads and ductility of the beams as compared to conventional one. It also reduced the number and widths of cracks in shear span. The theoretical model could predict the debonding failure load of intermediate anchor which was comparable with the experimental finding. Finally, numerical model predicted the structural behaviour of proposed intermediate anchored strengthened beams satisfactorily. 2015-08 Article PeerReviewed application/pdf http://eprints.um.edu.my/15668/1/Prevention_of_Debonding_Failure_of_Intermediate_Anchor_to_Eliminate_Premature_Shear_Failure.pdf http://link.springer.com/article/10.1007%2Fs13369-015-1739-1 Alam, M.A.; Jumaat, M.Z. (2015) Prevention of debonding failure of intermediate anchor to eliminate premature shear failure of flexurally strengthened reinforced concrete beams. Arabian Journal for Science and Engineering <http://eprints.um.edu.my/view/publication/Arabian_Journal_for_Science_and_Engineering.html>, 40 (8). pp. 2219-2232. ISSN 1319-8025 http://eprints.um.edu.my/15668/
repository_type	Digital Repository
institution_category	Local University
institution	University Malaya
building	UM Research Repository
collection	Online Access
topic	T Technology (General) TA Engineering (General). Civil engineering (General)
spellingShingle	T Technology (General) TA Engineering (General). Civil engineering (General) Alam, M.A. Jumaat, M.Z. Prevention of debonding failure of intermediate anchor to eliminate premature shear failure of flexurally strengthened reinforced concrete beams
description	This research proposed an optimal method of intermediate anchor to prevent premature debonding failure of anchor plate for eliminating premature shear failure of CFRP laminate flexurally strengthened reinforced concrete (RC) beam. In the experimental programme, seven RC beam specimens were prepared which included un-strengthened control beam and flexurally strengthened beams with CFRP laminate. The flexurally strengthened beams were further shear strengthened using L-shaped intermediate anchors based on proposed and conventional methods. The experimental results of specimens were compared with the numerical results. Theoretical model had also been proposed to predict the debonding failure of intermediate anchors. Results showed that the anchors obtained based on the proposed design guideline prevented premature debonding failure of anchor plates completely and thus, the proposed intermediate anchored strengthened beams did not show premature shear failures. Whereas beams having the anchor plates based on conventional method failed by premature debonding of anchor plates followed by premature shear. The proposed intermediate anchors significantly increased the ultimate loads and ductility of the beams as compared to conventional one. It also reduced the number and widths of cracks in shear span. The theoretical model could predict the debonding failure load of intermediate anchor which was comparable with the experimental finding. Finally, numerical model predicted the structural behaviour of proposed intermediate anchored strengthened beams satisfactorily.
format	Article
author	Alam, M.A. Jumaat, M.Z.
author_facet	Alam, M.A. Jumaat, M.Z.
author_sort	Alam, M.A.
title	Prevention of debonding failure of intermediate anchor to eliminate premature shear failure of flexurally strengthened reinforced concrete beams
title_short	Prevention of debonding failure of intermediate anchor to eliminate premature shear failure of flexurally strengthened reinforced concrete beams
title_full	Prevention of debonding failure of intermediate anchor to eliminate premature shear failure of flexurally strengthened reinforced concrete beams
title_fullStr	Prevention of debonding failure of intermediate anchor to eliminate premature shear failure of flexurally strengthened reinforced concrete beams
title_full_unstemmed	Prevention of debonding failure of intermediate anchor to eliminate premature shear failure of flexurally strengthened reinforced concrete beams
title_sort	prevention of debonding failure of intermediate anchor to eliminate premature shear failure of flexurally strengthened reinforced concrete beams
publishDate	2015
url	http://link.springer.com/article/10.1007%2Fs13369-015-1739-1 http://link.springer.com/article/10.1007%2Fs13369-015-1739-1 http://eprints.um.edu.my/15668/1/Prevention_of_Debonding_Failure_of_Intermediate_Anchor_to_Eliminate_Premature_Shear_Failure.pdf
first_indexed	2018-09-06T06:31:54Z
last_indexed	2018-09-06T06:31:54Z
_version_	1610838719974080512

Prevention of debonding failure of intermediate anchor to eliminate premature shear failure of flexurally strengthened reinforced concrete beams

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