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Experimental and analytical investigation on flexural behaviour of RC beams strengthened with NSM CFRP prestressed concrete prisms
Deng,Yu1; Li,Zhenzhen2; Zhang,Hexin3; Corigliano,Alberto4; Lam,Angus C.C.5; Hansapinyo,Chayanon6; Yan,Zhitao7
2021-02-01
Source PublicationComposite Structures
ISSN0263-8223
Volume257
Abstract

This investigation aims to study the flexural behaviour of reinforced concrete (RC) beams strengthened with near-surface mounted (NSM) carbon fibre reinforced polymer prestressed concrete prisms (CFRP-PCPs). Eight RC beams were tested under monotonic loading until the failure load was reached. One beam was un-strengthened to act as a control beam. The other seven beams were strengthened with non-prestressed or prestressed NSM CFRP-PCPs. The effects of bond length, prestress level, and concrete type of the CFRP-PCPs on the flexural capacity, flexural crack and deflection are discussed in this paper. The results indicate that the flexural capacity of RC beams strengthened with NSM CFRP-PCPs was greater than the control beam. An obvious improvement was discovered in the crack resistance when the RC beams were strengthened with prestressed NSM CFRP-PCPs. The strengthened beams showed a higher first-cracking, yielding, and ultimate load as the bond length and prestress level of CFRP-PCPs increased up to a critical level. The beams strengthened with CFRP-PCPs, which were cast with ultra-high performance concrete (UHPC), exhibited greater load capacity than the corresponding beams with epoxy resin mortar. The analytical model of flexural response for the NSM CFRP-PCPs strengthening beams is presented. The analytical results are in good agreement with the experimental results, which revealed the NSM CFRP-PCPs is an effective technique for flexural strengthening of the RC beams.

KeywordAnalytical Model Cfrp-pcps Flexural Behaviour Nsm Strengthening
DOI10.1016/j.compstruct.2020.113385
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaMechanics ; Materials Science
WOS SubjectMechanics ; Materials Science, Composites
WOS IDWOS:000604727500002
Scopus ID2-s2.0-85097716668
Fulltext Access
FWCI2.0440679
Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorZhang,Hexin
Affiliation1.School of Civil Engineering and Architecture,Guangxi University of Science and Technology,Liuzhou,545006,China
2.Chalco Shandong Engineering Technology Co.,Ltd,Zibo,255000,China
3.School of Engineering and the Built Environment,Edinburgh Napier University,Edinburgh,10 Colinton Road,EH10 5DT,United Kingdom
4.Department of Civil and Environmental Engineering,Politecnico di Milano,20133,Italy
5.Department of Civil and Environmental Engineering,Faculty of Science and Technology,University of Macau,Macau,China
6.Center of Excellence in Natural Disaster Management,Department of Civil Engineering,Chiang Mai University,Chiang Mai,50200,Thailand
7.School of Civil Engineering,Chongqing University of Science and Technology,Chongqing,401331,China
Recommended Citation
GB/T 7714
Deng,Yu,Li,Zhenzhen,Zhang,Hexin,et al. Experimental and analytical investigation on flexural behaviour of RC beams strengthened with NSM CFRP prestressed concrete prisms[J]. Composite Structures,2021,257.
APA Deng,Yu,Li,Zhenzhen,Zhang,Hexin,Corigliano,Alberto,Lam,Angus C.C.,Hansapinyo,Chayanon,&Yan,Zhitao.(2021).Experimental and analytical investigation on flexural behaviour of RC beams strengthened with NSM CFRP prestressed concrete prisms.Composite Structures,257.
MLA Deng,Yu,et al."Experimental and analytical investigation on flexural behaviour of RC beams strengthened with NSM CFRP prestressed concrete prisms".Composite Structures 257(2021).
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