Optimization of intermediate anchors to eliminate premature shear failure of CFRP laminate flexurally strengthened R.C beams

Flexurally strengthened RC beams usually fail by means of premature shear due to low shear as compared to flexure. Intermediate anchors in the length of shear span of those beams would successfully eliminate this problem. This paper presents the experimental studies on the effects of intermediate an...

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Main Authors:	Jumaat, M.Z., Alam, M.A.
Format:	Article
Published:	International Journal of Physical Sciences 2011
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://www.scopus.com/inward/record.url?eid=2-s2.0-79956351771&partnerID=40&md5=b0299db6a62ed480e7d234d134c01f26 http://www.scopus.com/inward/record.url?eid=2-s2.0-79956351771&partnerID=40&md5=b0299db6a62ed480e7d234d134c01f26 http://eprints.um.edu.my/5976/1/Optimization_of_intermediate_anchors_to_eliminate_premature_shear_failure_of_CFRP_laminate_flexurally_strengthened_R.C_beams.pdf

id	um-5976
recordtype	eprints
spelling	um-59762017-10-04T07:48:16Z Optimization of intermediate anchors to eliminate premature shear failure of CFRP laminate flexurally strengthened R.C beams Jumaat, M.Z. Alam, M.A. TA Engineering (General). Civil engineering (General) Flexurally strengthened RC beams usually fail by means of premature shear due to low shear as compared to flexure. Intermediate anchors in the length of shear span of those beams would successfully eliminate this problem. This paper presents the experimental studies on the effects of intermediate anchors in preventing premature shear failure of CFRP laminate flexurally strengthened RC beams. Design guidelines to optimize the intermediate anchors for eliminating premature shear failure are proposed. In the experimental programme, four RC beams were cast. One beam was tested in the un-strengthened condition to act as the control beam. The remaining beams were strengthened with CFRP laminates. Among the strengthened beams, one beam was prepared without intermediate anchors, one was intermediate anchored based on the proposed design method, and the last one was intermediate anchored using arbitrary anchor plates. Results showed that strengthened beam with having optimal intermediate anchors had higher ultimate strength as compared to that of the control beam. The optimal anchors significantly increased both the ultimate load as well as ductility of the said beams as compared to the beam without intermediate anchors. Moreover, the optimal intermediate anchors also reduced the number of cracks and crack widths in the shear span region. In conclusion, the beam with optimal intermediate anchors had identical failure load, crack widths, deflections and strain characteristics as that of arbitrarily anchored strengthened beam. International Journal of Physical Sciences 2011 Article PeerReviewed application/pdf http://eprints.um.edu.my/5976/1/Optimization_of_intermediate_anchors_to_eliminate_premature_shear_failure_of_CFRP_laminate_flexurally_strengthened_R.C_beams.pdf http://www.scopus.com/inward/record.url?eid=2-s2.0-79956351771&partnerID=40&md5=b0299db6a62ed480e7d234d134c01f26 Jumaat, M.Z.; Alam, M.A. (2011) Optimization of intermediate anchors to eliminate premature shear failure of CFRP laminate flexurally strengthened R.C beams. International Journal of Physical Sciences <http://eprints.um.edu.my/view/publication/International_Journal_of_Physical_Sciences.html>, 6 (2). pp. 182-192. ISSN 19921950 http://eprints.um.edu.my/5976/
repository_type	Digital Repository
institution_category	Local University
institution	University Malaya
building	UM Research Repository
collection	Online Access
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Jumaat, M.Z. Alam, M.A. Optimization of intermediate anchors to eliminate premature shear failure of CFRP laminate flexurally strengthened R.C beams
description	Flexurally strengthened RC beams usually fail by means of premature shear due to low shear as compared to flexure. Intermediate anchors in the length of shear span of those beams would successfully eliminate this problem. This paper presents the experimental studies on the effects of intermediate anchors in preventing premature shear failure of CFRP laminate flexurally strengthened RC beams. Design guidelines to optimize the intermediate anchors for eliminating premature shear failure are proposed. In the experimental programme, four RC beams were cast. One beam was tested in the un-strengthened condition to act as the control beam. The remaining beams were strengthened with CFRP laminates. Among the strengthened beams, one beam was prepared without intermediate anchors, one was intermediate anchored based on the proposed design method, and the last one was intermediate anchored using arbitrary anchor plates. Results showed that strengthened beam with having optimal intermediate anchors had higher ultimate strength as compared to that of the control beam. The optimal anchors significantly increased both the ultimate load as well as ductility of the said beams as compared to the beam without intermediate anchors. Moreover, the optimal intermediate anchors also reduced the number of cracks and crack widths in the shear span region. In conclusion, the beam with optimal intermediate anchors had identical failure load, crack widths, deflections and strain characteristics as that of arbitrarily anchored strengthened beam.
format	Article
author	Jumaat, M.Z. Alam, M.A.
author_facet	Jumaat, M.Z. Alam, M.A.
author_sort	Jumaat, M.Z.
title	Optimization of intermediate anchors to eliminate premature shear failure of CFRP laminate flexurally strengthened R.C beams
title_short	Optimization of intermediate anchors to eliminate premature shear failure of CFRP laminate flexurally strengthened R.C beams
title_full	Optimization of intermediate anchors to eliminate premature shear failure of CFRP laminate flexurally strengthened R.C beams
title_fullStr	Optimization of intermediate anchors to eliminate premature shear failure of CFRP laminate flexurally strengthened R.C beams
title_full_unstemmed	Optimization of intermediate anchors to eliminate premature shear failure of CFRP laminate flexurally strengthened R.C beams
title_sort	optimization of intermediate anchors to eliminate premature shear failure of cfrp laminate flexurally strengthened r.c beams
publisher	International Journal of Physical Sciences
publishDate	2011
url	http://www.scopus.com/inward/record.url?eid=2-s2.0-79956351771&partnerID=40&md5=b0299db6a62ed480e7d234d134c01f26 http://www.scopus.com/inward/record.url?eid=2-s2.0-79956351771&partnerID=40&md5=b0299db6a62ed480e7d234d134c01f26 http://eprints.um.edu.my/5976/1/Optimization_of_intermediate_anchors_to_eliminate_premature_shear_failure_of_CFRP_laminate_flexurally_strengthened_R.C_beams.pdf
first_indexed	2018-09-05T16:56:32Z
last_indexed	2018-09-05T16:56:32Z
_version_	1610833972014612480

Optimization of intermediate anchors to eliminate premature shear failure of CFRP laminate flexurally strengthened R.C beams

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