Bond Strength of Epoxy-Coated Reinforcing Bars

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Title: Bond Strength of Epoxy-Coated Reinforcing Bars

Author(s): R. A. Treece and J. O. Jirsa

Publication: Materials Journal

Volume: 86

Issue: 2

Appears on pages(s): 167-174

Keywords: anchorage (structural); bond (concrete to reinforcement); coatings; deformed reinforcement; epoxy resins; high-strength concretes; lap connections; reinforcing steels; splicing; Materials Research

DOI: 10.14359/2341

Date: 3/1/1989

Abstract:
Epoxy-coated bars are used in nearly all types of structures where corrosion may cause deterioration. Bridge decks and parking garages are especially susceptible to salt-induced damage. For satisfactory structural performance, bond between concrete and steel is essential, and the effect of coatings that might decrease bond should be considered in designs. In this study, 21 beams with lap splices in a constant moment region were tested in nine groups, and the bond strength of epoxy-coated bars was compared to that of uncoated bars. Variables were bar size, concrete strength, casting position, and coating thickness. In each test group, the only variable was the coating thickness.


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