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Experimental and analytical flexural performances of reinforced concrete beams strengthened with post-tensioned near surface mounted basalt composite laminates

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10.1016/j.compositesb.2018.08.072
 
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Gil Espert, LluísMés informacióMés informacióMés informació
Bernat Masó, ErnestMés informacióMés informacióMés informació
Escrig Pérez, ChristianMés informació
Document typeArticle
Defense date2019-01-15
PublisherElsevier
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Near surface mounted (NSM) is a technique that improves the strengthening capacity of composite laminates. The use of a post-tensioning technique modifies the performance of the strengthening because it is active bearing loads from the very beginning. This study compares the performances of three beams: one without strengthening, one with passive NSM laminate, and a third with post-tensioned NSM laminate. The experimental approach compares the pre-cracking and post-cracking performance until failures, showing that the post-tensioned solution withstands larger loads in pre-cracking and presents less deformation in post-cracking. Moreover, post-tensioning is an effective technique that can prevent loss of stiffness even after cracking. Finally, simple analytical equations based on the plane cross-section for pre-cracking and failure analysis are proposed, showing good agreement with the experimental results.
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© 2018. This version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
CitationGil, L., Bernat, E., Escrig, C. Experimental and analytical flexural performances of reinforced concrete beams strengthened with post-tensioned near surface mounted basalt composite laminates. "Composites part B: engineering", 15 Gener 2019, vol. 157, p. 45-57. 
URIhttp://hdl.handle.net/2117/121763
DOI10.1016/j.compositesb.2018.08.072
ISSN1359-8368
Publisher versionhttps://www.sciencedirect.com/science/article/pii/S1359836818318717
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  • Departament de Resistència dels Materials i Estructures en Enginyeria (fins octubre 2015) - Articles de revista [286]
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