BOND OF NSM FRP STRENGTHENED CONCRETE: ROUND ROBIN TEST INITIATIVE

Abstract

Although an extensive amount of research into the debonding behaviour of FRP strengthening systems has been conducted in literature, no standard methodology has been yet established that represent the actual behaviour. To asses the performance and reliability of small scale testing on NSM (near surface mounted) FRP strengthening systems an experimental program, in the framework of an international Round Robin Testing (RRT) has been carried out on a series of 9 NSM FRP strengthening systems. Eleven laboratories and seven manufacturers and suppliers participated in this extensive international exercise, which was initiated within the framework of the European funded Marie Curie Research Training Network, EN-CORE, with the support of Task Group 9.3 of the International Federation for Structural Concrete (fib). Test results obtained by the participating laboratories are discussed and compared in this paper.