Update on Experience with Rehabilitation of Pressure Pipes

Abstract

While the structural rehabilitation of pressure pipes has been common practice in Europe and the USA for a number of years, the Asia Pacific (APAC) region is just starting to realise the potential of this technology through a number of recent successful projects. Structural pressure pipe rehabilitation and technologies have advanced tremendously across the world over the last 10 years, and offer a cost effective and low impact solution to many issues when applied under the right circumstances. The rehabilitation of pressure pipes, especially watermains, is a critical issue in Australia and Asia, and the need for this technology will continue to grow in a similar way to sewer rehabilitation in the 1980s – 1990s. This paper will provide an update on a 2013 paper, and touch on a number of different methodologies available for close-fit pressure pipe rehabilitation using a number of innovative products. The paper will review the development of these products and the testing undertaken to prove their performance. It will also touch on the installation of the products, and the advantages, disadvantages, and limitations of each under different scenarios. The paper will mainly focus on the review of a number of recent project case studies from Australia and Asia, which will help to highlight the benefits of the technology, as well as raising the level of awareness of the industry. New project case studies will include works for Sydney Water and Melbourne Airport in Australia, as well as the Hong Kong Water Department.