Evolution of bending stiffness of RC beam reinforced by CFRP under fatigue loading

摘要

Strengthening and rehabilitating concrete structures with carbon fiber reinforced polymer (CFRP) is becoming an increasingly popular retrofit technique. A considerable research effort has been done to understand and model the behavior of CFRP strengthened concrete beams submitted to monotonic bending, but only a few works study the long term behavior under cyclic solicitations. The objective of this study is to evaluate the fatigue behavior of concrete beams reinforced with CFRP, and submitted to four points bending.