1982•Publication of: Transport and Road Research LaboratoryRequires access

THE MICROSTRUCTURE OF EPOXY BONDED STEEL-TO-CONCRETE JOINTS

Gareth O. Lloyd, Ajj Calder

Abstract

Exposure tests are being carried out on concrete specimens strengthened by steel plates epoxy bonded to the surface of the concrete. Visual examination has shown that corrosion of the steel plate can take place at the interface between the steel and the adhesive and the existence of chlorides in the corrosion product have been detected. Similar results have been observed on a small section of plate removed from a strengthened highway bridge. A microstructural analysis of the concrete/resin system using marker solutions and electron microscopy has revealed cracks and pores in both the concrete and the resin. It has been shown that these cracks act as routes for corrosive liquids to reach the steel plate and cause corrosion. The use of a primer on the steel plate has been generally successful in inhibiting the corrosion. (A) (TRRL)

About this research paper

What this paper is about

Why it matters

OpenAlex reports 6 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Corrosion, Epoxy, Materials science, Microstructure, Composite material, Adhesive, Primer (cosmetics), Metallurgy