In
many
reinforced concrete structures built in the 1970’s and earlier, bottom
beam reinforcement is not continuous
and if a column support is lost due to
terrorist attack or other unexpected action, the structure could be vulnerable
to progressive collapse. The beams may not develop catenary action if the
reinforcement is not continuous. The use of CFRP material may provide a
solution for rehabilitating such structures. CFRP materials can not develop
full tensile capacity unless they are properly anchored to the
reinforced concrete structure. The intent of this study is to find an effective method of
anchoring CFRP material to a reinforced concrete beam so that the ultimate
tensile strength of the CFRP is realized. In this study, four reinforced
concrete beams
rehabilitated using different configurations of anchors were
tested to assess the effectiveness of the anchors. All the beams were undamaged
before they were rehabilitated. Both CFRP anchors and CFRP U-wraps were
investigated. The rehabilitated beams were loaded until failure of the CFRP
material or anchor occurred. Different failure modes, strengths and deformation
capacities of the rehabilitated beams were observed depending on the
configurations of anchors. The maximum capacity was obtained using a
combination of CFRP anchors and U-wraps.