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In this test, a 10"x6"x12' reinforced concrete beam was tested to failure in a four point loading configuration. After failure of the control beam it was repaired with FiberBond™ epoxy repair system and re-tested.
The damaged concrete beam was prepared as per the FiberBond™ Repair Manual.
The surface was sandblasted and cleaned, and the cracks were filled with epoxy resin. Two layers of FiberBond™ carbon fiber were applied and allowed to cure for seven days at ambient temperature – total thickness of materials <0.020".
The repaired beam was then re-tested and reached 23.97 kips before failing. The failure mode was progressive and cohesive – no adhesive bond failure was observed and the reinforcing steel was still intact. The test clearly demonstrates the effectiveness of FiberBond™ for seismic and structural upgrading of any structure.
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