State-of-the-Art Literature Review on In-Situ Pipe Repairs and Durability

For any aging infrastructure, its probability of failure increases with time. There is a multitude of ways to repair and rehabilitate deteriorating pipes, and as the infrastructure system continues to age, there is a need for less invasive pipe renewal techniques. The focus of the paper is to examine the methodology, advantages, disadvantages, applications and factors affecting the durability of the five most common in-situ repair methods: sliplining, cured-in-place-pipe, structural spray on lining (sprayed-in-place-pipe), spiral wound lining (grout-in-place-pipe), and fold and form lining (formed-in-place-pipe). A summary of the findings for each method is presented in tabular form at the end of the paper. The factors that affect the durability of various pipe materials typically used in the pipe repair methods mentioned above were also researched. After an extensive literature review, it can be concluded that, when compared to the traditional open cut pipe replacement method, in-situ technologies cause less disruption to the surrounding environment, less inconvenience on the community, and in appropriate applications are more cost effective. This paper is meant only to aid in the decision making process, but not to replace literature provided by the manufacturer nor guidelines set forth by local, state or federal agencies.