The reliable characterisation of the bond behaviour of an FRP system bonded to concrete is
critical for the optimal design and detailing of a strengthening solution. Although various test
methods to examine the bond behaviour of externally bonded FRP systems have been
proposed thus far, their implementation can lead to a wide range of results and a standard
methodology has yet to be generally accepted. With these issues in mind, a Round Robin
Testing programme was carried out to assess the performance and reliability of small scale
testing on six externally bonded FRP strengthening systems. Seven laboratories and four
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). This paper describes the proposed testing programme and
summarizes the results obtained by the participating laboratories