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Strengthening of Concrete with Carbon Fibre Reinforced Polymer (CFRP) Grids Bonded by Cementitious Binders
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0002-2922-5815
2014 (English)In: Nordic Concrete Research, ISSN 0800-6377, Vol. 50, p. 207-210Article in journal (Refereed) Published
Abstract [en]

Knowledge of the tensile behaviour of the strengthening material is important to estimate the shear capacity of the strengthened structure. In this paper, the tensile behaviour of externally bonded carbon fibre polymer (CFRP) grids has been studied. Bonding agent was either quasi-brittle polymer-modified mortar (PMM) or strain-hardening (“ductile”) mortar, instead of the typical epoxy resin. Uniaxial tensile and wedge-splitting tests were conducted to investigate the tensile-, and post-cracking behaviour, toughness, and ductility. The strain-hardening mortar enhanced both the load bearing- and in particular, the deformation capacity, surpassing the benefits of the PMM. The “ductile” mortar has also shifted the overall behaviour from brittle towards a more ductile failure.Keywords: Concrete, Strengthening, CFRP, Testing, Strain Hardening, Tensile Behaviour, Cracking, Brittleness, Deformation Capacity

Place, publisher, year, edition, pages
2014. Vol. 50, p. 207-210
National Category
Infrastructure Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-38575Local ID: d038cb4b-b674-4d3e-b453-55f92691e3c6OAI: oai:DiVA.org:ltu-38575DiVA, id: diva2:1012075
Conference
Nordic Concrete Research Symposia : 13/08/2014 - 15/08/2014
Note
Godkänd; 2014; 20140829 (katoro); Konferensartikel i tidskriftAvailable from: 2016-10-03 Created: 2016-10-03 Last updated: 2018-05-25Bibliographically approved

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Orosz, Katalin

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