Rehabilitation Alternatives for Concrete and Brick Sewers
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Abstract
Sanitary and storm sewer collection systems are aging, and the reactive approach traditionally used for repair and rehabilitation is no longer appropriate. A comprehensive program including assessment of the existing infrastructure, adequate management, and clear understanding of the causes of deterioration in the sewer systems is imperative. Several rehabilitation alternatives are already in use, but on a restricted basis. This paper will discuss rehabilitation techniques used for concrete and brick sewers. The techniques considered include trenchless technologies such as slip liners, cured-in-place liners, and formed-in-place pipe liners. Also included are chemical grouts, coatings, and robotic rehabilitation. A comparison matrix and a case study of the Central Outfall Sewer in the city of Los Angeles are presented to compare different rehabilitation alternatives for underground infrastructure.
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Copyright © 2002 American Society of Civil Engineers.
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Received: Jul 5, 2001
Accepted: Oct 30, 2001
Published online: Oct 15, 2002
Published in print: Nov 2002
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