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.