Method for Refurbishing Pre-Stressed Concrete Cylinder Pipe and Refurbished Pre-Stressed Concrete Cylinder Pipe

원문 (중국어)

A method for refurbishing a pre-stressed concrete cylinder pipe (PCCP) comprises removing concrete from an existing inner surface of the PCCP at each end thereof to expose a metal core, cleaning the exposed metal core and depositing filler over the exposed metal core at each end of the PCCP to a thickness wherein the filler is substantially flush with the existing inner surface. One or more layers of carbon fibre reinforced polymer (CFRP) liner are applied to the existing inner surface of the PCCP and to the filler at each end of the PCCP. Each layer of CFRP liner conforms to the inner surface of the PCCP and the filler and remains substantially cylindrical with substantially constant diameter along a length of the PCCP with substantially unbent cylindrical ends. After curing all layer(s) of CFRP liner, each terminus of the layer(s) of CFRP liner is sealed.