The upper 25% of the beams where the steel clamps are visible were not reinforced to simulate the presence of a 4" deck. After surface preparation as per Edge Structural Composites specs, two layers of Fiber-Bond™ carbon was applied to the beams in the lateral direction. Two layers were applied as a stirrup around the bottom of the beams, and two layers were applied at +/- 60 degrees in the connection area. An additional 8" of the column was wrapped to prevent premature failure.

The control specimen failed at 2 degrees of drift and no load was transferred between the lower steel bars. The specimen retrofitted with Fiber-Bond™ carbon fiber was tested in increments of 1 degree and 3 cycles each way. The test was halted at an amazing 8 degrees of drift! The beams were still holding 50% of their original load.

This test clearly demonstrates the effectiveness of Fiber-Bond™ in reinforcing non ductile R/C building joints with little or no impact on the structure. The retrofit was completed by three workers in approx three hours.