# 2010 Vancouver
In the present work a comprehensive material characterization of a commercially PE 100 Close-Fit-Liner was conducted, in which the main focus always was given on a correlation of the material properties of a conventional pipe and the final state of the redeformed CFL, which may change due to considerable additional thermal and mechanical treatment during the installation. It was shown that no significant thermo-oxidative aging occurs. However, a significant improvement of the finally installed Close-Fit-Liner was detected concerning the residual stresses, which were nearly completely reduced. Moreover, a positive effect on the crack growth resistance of the material was found.