Abstract
Twenty three beams with splices placed in a constant moment region were subjected to repeated loading and then tested to failure to compare the service and ultimate load behavior of beams with coated and uncoated reinforcement. The repeated loading consisted of one million or 5 million cycles in the service load range. Splittng cracks formed at a lower load in beams with epoxy-coated reinforcement than in beams with uncoated reinforcement. Deflections, crack widths, and reinforcement stresses were larger in beams with epoxy-coated reinforcement during service loading. The differences were reduced with repeated loading. The differences are attributed to a larger friction component of the bond mechanism with uncoated reinforcement.
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