Title:
Influence of Epoxy-Coated Reinforcement on Response of Normal and High-Strength Concrete Beams
Author(s):
Homayoun H. Abrishami, William D. Cook, and Denis Mitchell
Publication:
Structural Journal
Volume:
92
Issue:
2
Appears on pages(s):
157-166
Keywords:
beams (supports); bond (concrete to reinforcement); ductility; cracking (fracturing); diagonal tension; epoxy resins; flexural strength; high-strength concrete; reinforced concrete; Structural Research
DOI:
10.14359/1143
Date:
3/1/1995
Abstract:
Investigates the effect of epoxy-coated reinforcement on the flexural behavior of both normal and high-strength reinforced concrete beams. The flexural reinforcement was either uncoated or coated with either 6 to 8 mils or 10 to 12 mils of epoxy. Different types of cracks that were observed, including flexural cracks, splitting cracks, and diagonal tension cracks, are discussed. Beams with epoxy-coated bars in both normal and high-strength concrete showed lower ductilities than similar beams with uncoated bars. The crack widths in specimens reinforced with coated bars are larger than in companion specimens with uncoated bars. Crack widths observed at service load levels in the high-strength concrete beams were typically smaller than those observed in normal strength concrete beams. The high-strength concrete beams were less ductile than the normal strength concrete beams.