This website is right now being updated. Some of the content might still refer to ptc 2019.
Utility providers around the world are challenged with aging water infrastructure. Although trenchless technologies are well-established in the sewer industry, the trenchless rehabilitation of pressurized assets is steadily emerging. The paper presents existing trenchless solutions in the potable water industry and focuses in particular on a Kevlar® reinforced composite lining system that is widely deployed in Europe. The paper will show the make-up of the liner as well as functionality of the corresponding termination fittings. Furthermore, the paper will demonstrate that the Kevlar® fabric does offer both material strength as well as flexibility. The paper will present several case studies on the trenchless rehabilitation of water mains using the Kevlar® reinforced composite lining system. The case studies will demonstrate that long installation lengths are feasible and the Kevlar® reinforced liner is capable of traversing bends. The paper will conclude with the advantages and limitations of this lining system.