Concrete-to-concrete bond strength: influence of an epoxy-based bonding agent on a roughened substrate surface-Reference-Cited by-同舟云学术

Concrete-to-concrete bond strength: influence of an epoxy-based bonding agent on a roughened substrate surface

Published:2005-10 Issue:8 Volume:57 Page:463-468
ISSN:0024-9831
Container-title:Magazine of Concrete Research
language:en
Short-container-title:Magazine of Concrete Research

Author:

Júlio E. N. B. S.¹,Branco F. A. B.²,Silva V. D.¹

Affiliation:

1. Department of Civil Engineering, Faculty of Sciences and Technology, University of Coimbra Portugal

2. Department of Civil Engineering, Instituto Superior Técnico, Technical University of Lisbon Portugal

Abstract

An experimental study was performed to evaluate the bond strength between two concrete layers, using different techniques for increasing the roughness of the substrate surface and a commercial epoxy-based bonding agent. A total of 40 slant shear half specimens and 40 pull-off half specimens first had the substrate surface prepared by wire-brushing, sand-blasting, chipping with a light jackhammer, or were left as-cast against steel formwork. Three months later, the bonding agent was applied and the new concrete was added. Pull-off tests and slant shear tests were performed to evaluate the bond strength in tension and in shear. Analysis of the results indicates that the application of an epoxy-based bonding agent does not improve the bond strength since the adopted method for surface preparation adequately increases its roughness.

Publisher

Thomas Telford Ltd.

Subject

General Materials Science,Building and Construction,Civil and Structural Engineering

Link

https://www.icevirtuallibrary.com/doi/pdf/10.1680/macr.2005.57.8.463

Reference17 articles.

1. Emmons P. H. Concrete Repair and Maintenance, 1994, R. S. Means Company, MA, 154–163, Part Three: Surface Repair, Section 6: Bonding Repair Materials to Existing Concrete.

2. Tensile bond testing of concrete repairs

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