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Compression failure mechanism in small-scale wood specimens reinforced with CFRP: An experimental study
RISE - Research Institutes of Sweden, Materials and Production, SICOMP.
Chalmers University of Technology.
RISE - Research Institutes of Sweden, Materials and Production, SICOMP.ORCID iD: 0000-0002-2627-3280
2013 (English)In: Construction and Building Materials, ISSN 0950-0618, E-ISSN 1879-0526, Vol. 41, p. 790-800Article in journal (Refereed) Published
Abstract [en]

The optimal use of Carbon Fibre Reinforced Polymer (CFRP) when strengthening timber beams loaded in bending involves considering placing the reinforcement on both the tension and the compression side, in order to utilise the ductile compression failure of the wood to the full. In this respect, a knowledge and understanding of the compression failure mechanism of the timber/CFRP system becomes a point of paramount importance. However, no testing method specific to the compression loading of small wood specimens reinforced with CFRP is currently available. This investigation focuses on the experimental developments of the geometry and test set-up necessary in order to determine the compression failure mechanism of small wood block specimens reinforced with CFRP loaded in compression parallel to the grain. The method is based on an existing testing method for unreinforced wood specimens. The Digital Image Correlation (DIC) method is used to monitor deformation during experiments. The experimental results of reinforced specimens are compared with those of paired unreinforced specimens tested in a previous study. The experimental method presented in this study shows that specific geometry and test considerations must be implemented when compared with the existing method for unreinforced specimens. © 2012 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2013. Vol. 41, p. 790-800
Keywords [en]
CFRP, Compression failure parallel to the grain, Ductility, Experimental method, Kinkband, Strengthening, Timber, Wood
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-13160DOI: 10.1016/j.conbuildmat.2012.12.038OAI: oai:DiVA.org:ri-13160DiVA, id: diva2:973356
Available from: 2016-09-22 Created: 2016-09-22 Last updated: 2019-06-28Bibliographically approved

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Publisher's full texthttp://www.sciencedirect.com/science/article/pii/S0950061812009956

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Olsson, Robin

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CiteExportLink to record
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