STRENGTHENING OF CONCRETE BEAMS WITH MECHANICALLY FASTENED FRP STRIPS

ABSTRACT

The current method of flexurally strengthening reinforced concrete members involves bonding fiber reinforced polymer (FRP) strips, which requires extensive time and skilled labor. An alternative method is being developed which uses powder actuated fastening systems to attach the FRP strips to the concrete surface. Powder actuated tools are inexpensive, readily available, and do not require sophisticated training to operate. The fasteners must be attached in a certain manner as not to destroy the concrete substrate, which reduces fastener strength and reduces the durability of the concrete member. This paper presents the initial experimental and analytical research from the investigation of this method on full-scale reinforced concrete T beams.