Abstract
In this paper, in order to establish a rational flexural strengthening method for Reinforced Concrete (RC) structures by using Aramid FRP sheet, load-carrying behavior of RC beams including sheet debonds is experimentally discussed. Results obtained from this study are as follows: 1) two types of failure mode on the RC beams are experimentally confirmed: sheet debonding failure type; and flexural compression failure type; 2) in either cases, the sheet is debonded due to a peeling action of concrete blocks formed near cover concrete in the shear span; and 3) these failure modes are depended upon the ratio of the length of main-rebar yield area in the shear span to the length of shear span.
