Local Bond Strength of Vitreous Enamel Coated Rebar to Concrete

Abstract

In this paper, the bond strength between vitreous enamel coated rebar and concrete is characterized through testing of 96 pullout cylinder specimens. Key parameters investigated include rebar diameter, coating condition, confinement condition, concrete cover-to-rebar diameter ratio, and concrete strength. The unconfined and confined cylinders fail in concrete splitting with crushing zones distributed at rib fronts and concrete splitting plus shearing off, respectively. The enamel coating reduces the crushing angle and increases the crushing length of concrete. within the test ranges of various parameters, the overall increase in bond strength of the enamel coated rebar in normal concrete is approximately 15%. Confinement or reduction of rebar size can increase the effect of enamel coating on the bond strength by 2-4%.

Department(s)

Civil, Architectural and Environmental Engineering

Second Department

Materials Science and Engineering

Keywords and Phrases

Vitreous Enamel Coated Rebar; Rebar-To-Concrete Bond; Normal Strength Concrete; Pullout Test

International Standard Serial Number (ISSN)

0950-0618; 1879-0526

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Elsevier, All rights reserved.

Publication Date

01 Oct 2012

Link to Full Text

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