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.

A fiber reinforced laminate pipe joint can include a first pipe, a second pipe, where the first pipe and the second pipe can be fiber reinforced laminate pipes, and a pipe joint insert. The pipe joint insert can be partially inserted inside the first pipe and can be partially inserted inside the second pipe. The pipe joint insert can be bonded to the first pipe and the second pipe, where the pipe joint insert can include a fiber reinforced laminate, where a bonding agent in the fiber reinforced laminate of the pipe joint insert can be distinct from a bonding agent used to bond the pipe joint insert to the first pipe.

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.

It discloses a new type of prestressed steel cylinder concrete pipe with pre embedded acoustic emission sensors and distributed optical fibers; the pipe is composed of an inner layer of concrete, a steel cylinder, a connecting piece, an outer layer of concrete, a prestressed steel wire, an inner mortar protective layer, a distributed optical fiber, an outer mortar protective layer, an acoustic emission sensor, and an external sensor fixing piece; the connecting piece is fixedly connected to the external sensor, and the acoustic emission sensor is located on the external sensor fixing piece and closely adheres to the outer mortar protective layer; a PCCP pipe with pre embedded acoustic emission sensor and distributed optical fiber of the present invention is used to fix the acoustic emission sensor by using a connection piece combined with an external sensor fixing piece.

A vault system is provided to allow capture and encapsulation of debris generated during the rehabilitation of asbestos concrete (AC) pipe allowing the debris to remain in place while rendering the asbestos containing material harmless, in a manner that protects the ecosystem and saves huge amounts of money lost to packaging, shipping and disposal of this debris. The vault system provides for containment and encapsulation of the AC pipe repair debris in place, eliminating hazardous material disposal requirements, and the costs associated therewith.

A vault system is provided to allow capture and encapsulation of debris generated during the rehabilitation of asbestos concrete (AC) pipe allowing the debris to remain in place while rendering the asbestos containing material harmless, in a manner that protects the ecosystem and saves huge amounts of money lost to packaging, shipping and disposal of this debris. The vault system provides for containment and encapsulation of the AC pipe repair debris in place, eliminating hazardous material disposal requirements, and the costs associated therewith.