Current water main rehabilitation practice using trenchless technology | Zendy

Yichen Wu | Zendy; Chao Kang | Zendy; Mohammad Molavi Nojumi | Zendy; Alireza Bayat | Zendy; George Bontus | Zendy

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Current water main rehabilitation practice using trenchless technology

Author(s) -

Yichen Wu,

Chao Kang,

Mohammad Molavi Nojumi,

Alireza Bayat,

George Bontus

Publication year - 2021

Publication title -

water practice and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.243

H-Index - 15

ISSN - 1751-231X

DOI - 10.2166/wpt.2021.026

Subject(s) - trenchless technology , rehabilitation , mains electricity , current (fluid) , engineering , construction engineering , civil engineering , environmental science , pipeline transport , environmental engineering , electrical engineering , voltage , neuroscience , biology

The market for water infrastructure rehabilitation is growing rapidly due to the increasing age of underground utilities. Currently, two common water main rehabilitation methods exist: cured-in-place pipe (CIPP) and polymer spray-on coatings. CIPP can provide structural support for both internal and external loads, while spray-on techniques provide chemical resistance as well as adding minor strength to the existing pipe. This paper summarizes water main rehabilitation practice using CIPP and spray-on methods. The history of trenchless rehabilitation technology is discussed, as well as current methodologies and products for water mains. The design, installation, and monitoring of water main rehabilitation products are also summarized, along with the associated risks. Quality assurance and control (QA/QC) methods are included for evaluating existing products and procedures.

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