Modelling of the bond-slip behavior in FRP reinforced masonry

Su, Y; Wu, C; Griffith, MC

Modelling of the bond-slip behavior in FRP reinforced masonry

Su, Y

Wu, C

Griffith, MC

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Publication Type:: Journal Article
Citation:: Construction and Building Materials, 2011, 25 (1), pp. 328 - 334
Issue Date:: 2011-01-01

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Field	Value	Language
dc.contributor.author	Su, Y https://orcid.org/0000-0003-0043-5381	en_US
dc.contributor.author	Wu, C https://orcid.org/0000-0001-6786-7934	en_US
dc.contributor.author	Griffith, MC	en_US
dc.date.issued	2011-01-01	en_US
dc.identifier.citation	Construction and Building Materials, 2011, 25 (1), pp. 328 - 334	en_US
dc.identifier.issn	0950-0618	en_US
dc.identifier.uri	http://hdl.handle.net/10453/118345
dc.description.abstract	The strengthening of out-of-plane loaded unreinforced masonry (URM) walls strengthened with near-surface mounted (NSM) FRP strips has proven to be an innovative and cost effective strengthening technique. Since the performance of FRP-strengthened URM walls is often controlled by the behavior of the interface between the FRP and masonry, it is very important to model the bond-slip relationship accurately. In this paper, the bond-slip behavior of the FRP-to-masonry interface in a pull test was simulated by solid continuum elements where detailed information of the interface could be modelled directly. The masonry prism in the pull test was modelled using a previously derived homogenized model. For comparisons of computational efficiency, a continuum model, in which the mortar and masonry brick units are discritized individually, and the commonly used smeared-crack model were also employed to model the masonry prism in the pull test. A thin layer of interface elements was used to simulate the behavior of the FRP-to-masonry interfaces in each model. The accuracy and efficiency of the homogenized model together with the interface elements was validated by experimental data from (a) uniaxial pull tests of a NSM strip bonded to a masonry prism and (b) an out-of-plane loaded full-scale masonry wall strengthened with NSM CFRP strips running in the vertical direction. The simulated results using the homogenized model were found to agree well with test data from both sets of tests. © 2010 Elsevier Ltd. All rights reserved.	en_US
dc.relation.ispartof	Construction and Building Materials	en_US
dc.relation.isbasedon	10.1016/j.conbuildmat.2010.06.021	en_US
dc.subject.classification	Building & Construction	en_US
dc.title	Modelling of the bond-slip behavior in FRP reinforced masonry	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	25	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	1202 Building	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.issue	1	en_US
pubs.publication-status	Published	en_US
pubs.volume	25	en_US

Abstract:

The strengthening of out-of-plane loaded unreinforced masonry (URM) walls strengthened with near-surface mounted (NSM) FRP strips has proven to be an innovative and cost effective strengthening technique. Since the performance of FRP-strengthened URM walls is often controlled by the behavior of the interface between the FRP and masonry, it is very important to model the bond-slip relationship accurately. In this paper, the bond-slip behavior of the FRP-to-masonry interface in a pull test was simulated by solid continuum elements where detailed information of the interface could be modelled directly. The masonry prism in the pull test was modelled using a previously derived homogenized model. For comparisons of computational efficiency, a continuum model, in which the mortar and masonry brick units are discritized individually, and the commonly used smeared-crack model were also employed to model the masonry prism in the pull test. A thin layer of interface elements was used to simulate the behavior of the FRP-to-masonry interfaces in each model. The accuracy and efficiency of the homogenized model together with the interface elements was validated by experimental data from (a) uniaxial pull tests of a NSM strip bonded to a masonry prism and (b) an out-of-plane loaded full-scale masonry wall strengthened with NSM CFRP strips running in the vertical direction. The simulated results using the homogenized model were found to agree well with test data from both sets of tests. © 2010 Elsevier Ltd. All rights reserved.

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http://hdl.handle.net/10453/118345