REFORÇO E INCREMENTO DA RIGIDEZ À FLEXÃO DE LIGAÇÕES VIGA- PILAR DE ESTRUTURAS DE CONCRETO PRÉ-MOLDADO COM POLÍMERO REFORÇADO COM FIBRA DE CARBONO (PRFC)

摘要: This work presents a technique for flexural strengthening and stiffness increasing of precast beam-to-column connections by the embedding FRP strips into grooves made on concrete cover. According to this technique, tension in connection is transferred Near-Surface Mounted (NSM) strips. To allow transference compression efforts among elements, empty spaces are filled out with grout. Small-scale specimens were developed represent resistant mechanisms pined composed elastomeric cushion dowels. The results bond tests conducted decision about adhesive type length be employed specimens. Each specimen was assembly column section connected beam sections through their respective dowels cushions. reinforced CFRP lateral cover filling between beams column. Control prepared study influence grout performance. In those models, laid inside wooden forms cast together no cushions them. Experimental static dynamic done. show that strengthened exhibits semi-rigid behavior acquires strength compatible monolithic structure bars.