Effect of adhesive thickness and concrete strength on FRP-Concrete Bonds

López González, Julio César and Fernández Gómez, Jaime Antonio and González Valle, Enrique (2012). Effect of adhesive thickness and concrete strength on FRP-Concrete Bonds. "Journal of Composites for Construction", v. 16 (n. 6); pp. 705-711. ISSN 1090-0268. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000303.

Description

Title: Effect of adhesive thickness and concrete strength on FRP-Concrete Bonds
Author/s:
  • López González, Julio César
  • Fernández Gómez, Jaime Antonio
  • González Valle, Enrique
Item Type: Article
Título de Revista/Publicación: Journal of Composites for Construction
Date: December 2012
ISSN: 1090-0268
Volume: 16
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Construcción
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The use of fiber-reinforced polymer (FRP) composites for strengthening, repairing, or rehabilitating concrete structures has become more and more popular in the last 10 years. Irrespective of the type of strengthening used, design is conditioned, among others, by concrete-composite bond failure, normally attributed to stress at the interface between these two materials. Single shear, double shear, and notched beam tests are the bond tests most commonly used by the scientific community to estimate bond strength, effective length, and the bond stress-slip relationship. The present paper discusses the effect of concrete strength and adhesive thickness on the results of beam tests, which reproduce debonding conditions around bending cracks much more accurately. The bond stress-slip relationship was analyzed in a cross section near the inner edge, where stress was observed to concentrate. The ultimate load and the bond stress-slip relationship were visibly affected by concrete strength. Adhesive thickness, in turn, was found to have no significant impact on low-strength concrete but a somewhat greater effect on higher strength materials.

More information

Item ID: 16829
DC Identifier: http://oa.upm.es/16829/
OAI Identifier: oai:oa.upm.es:16829
DOI: 10.1061/(ASCE)CC.1943-5614.0000303
Official URL: http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29CC.1943-5614.0000303
Deposited by: Memoria Investigacion
Deposited on: 25 Nov 2013 13:46
Last Modified: 03 Mar 2020 18:18
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