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Use of image correlation system to study the bond behavior of FRCM-concrete joints
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering.
Department of Civil, Environmental and Architectural Engineering, University of Padua.
Department of Civil, Architectural and Environmental Engineering, Missouri University of Science and Technology, Rolla .
Department of Infrastructure, Materials and Structural Engineering, NORUT, .ORCID iD: 0000-0002-8682-876X
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2017 (English)In: Materials and Structures, ISSN 1359-5997, E-ISSN 1871-6873, Vol. 50, no 3, 172Article in journal (Refereed) Published
Abstract [en]

This paper presents a non-contact measurement approach, based on digital photogrammetry,applied to the experimental study of the bond behavior of fiber reinforced cementitious matrixcomposite (FRCM) - concrete joints tested in single-lap direct shear tests. The use of digitalphotogrammetry techniques and traditional contact measurement approaches for determiningdisplacement and strain are investigated and compared. The results show that measurements ofstrain in the fiber bundles determined using the image correlation system (ICS) correlate well withthose obtained from electrical strain gauges. However, differences of 38% to 52% were observedbetween the maximum strain measured with either ICS or electrical strain gages attached to thefiber bundles and the maximum strain in the fiber bundles computed from the maximum appliedload. ICS is also used to measure slip and strain of bare fiber bundles, and results show that theload distribution among fiber bundles is non-uniform. The proposed measurement approach showshigher spatial measurement resolution and increased accuracy compared to traditional contactapproaches by enabling measurements in each fiber bundle and overcoming the need to attachadditional elements to the tested specimen.

Place, publisher, year, edition, pages
2017. Vol. 50, no 3, 172
Keyword [en]
bond, carbon fiber, digital image correlation, direct shear, FRCM composite, point tracking
National Category
Composite Science and Engineering Infrastructure Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-62574DOI: 10.1617/s11527-017-1036-4Scopus ID: 2-s2.0-85018506006OAI: oai:DiVA.org:ltu-62574DiVA: diva2:1083115
Projects
European Network for Durable Reinforcement and Rehabilitation Solutions (endure)
Funder
EU, FP7, Seventh Framework Programme, MC-ITN-2013-607851
Note

Validerad; 2017; Nivå 2; 2017-04-26 (andbra)

Available from: 2017-03-20 Created: 2017-03-20 Last updated: 2017-06-27Bibliographically approved

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