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Strengthening of Concrete with Carbon Fibre Reinforced Polymer (CFRP) Grids Bonded by Cementitious Binders
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och -produktion.ORCID-id: 0000-0002-2922-5815
2014 (engelsk)Inngår i: Nordic Concrete Research, ISSN 0800-6377, Vol. 50, s. 207-210Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
2014. Vol. 50, s. 207-210
Emneord [en]
Concrete, Strengthening, CFRP, Testing, Strain Hardening, Tensile Behaviour, Cracking, Brittleness, Deformation Capacity
HSV kategori
Forskningsprogram
Konstruktionsteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-38575Lokal ID: d038cb4b-b674-4d3e-b453-55f92691e3c6OAI: oai:DiVA.org:ltu-38575DiVA, id: diva2:1012075
Konferanse
Nordic Concrete Research Symposia : 13/08/2014 - 15/08/2014
Merknad

Godkänd; 2014; 20140829 (katoro); Konferensartikel i tidskrift

Tilgjengelig fra: 2016-10-03 Laget: 2016-10-03 Sist oppdatert: 2024-04-04bibliografisk kontrollert

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Orosz, Katalin

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