RESEARCH ARTICLE
Mechanical and Bond Characteristics of SRP and CFRP Reinforcement – A Comparative Research
G.J. Mitolidis1, T.N. Salonikios2, A.J. Kappos*, 1
Article Information
Identifiers and Pagination:
Year: 2008Volume: 2
First Page: 207
Last Page: 216
Publisher ID: TOBCTJ-2-207
DOI: 10.2174/1874836800802010207
Article History:
Received Date: 1/04/2008Revision Received Date: 15/08/2008
Acceptance Date: 16/08/2008
Electronic publication date: 10/9/2008
Collection year: 2008
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Abstract
The paper reports results from the two first phases of an experimental research programme on the behaviour of concrete beams strengthened with reinforced polymers. The work presented here refers to results from tensile tests of SRP (Steel Reinforced Polymer) and CFRP (Carbon Fibre Reinforced Polymer) strips, with and without epoxy resin, as well as bond tests of polymer strips glued on rectangular concrete prisms. Concrete mix for the prisms was designed with a view to simulating the concrete strength that was used in Greece during the period from 1960 to 1980 for residential and office buildings. Various configurations of SRP and CFRP strips were bonded to ten rectangular concrete prisms using epoxy resin. The main parameters of the tests were the fibre type (steel, carbon), strip length, and strip width. For each specimen the deformation law (bond strength vs. total slip) up to maximum strength and elongation at failure, was recorded. Tested materials were classified according to their debonding strength and deformation capacity. Useful conclusions were drawn with respect to the influence of reinforced polymers length and width on the strength and deformation capacity. Analytical models available in the literature were applied, and the one proposed by Chen and Teng was found to better match the experimental measurements.