Destructive Analysis-Based Testing for Cured-in-Place Pipe
Publication: Journal of Performance of Constructed Facilities
Volume 29, Issue 4
Abstract
Trenchless rehabilitation techniques such as cured-in-place pipe (CIPP) had been adopted by many municipalities in the province of Quebec to renew their aging sewer systems. Currently CIPP represents the largest market share of the utilized trenchless rehabilitation techniques in the province of Quebec. Considerable funding is being directed towards sewer systems rehabilitation projects. However, there have been little studies on the performance of the rehabilitated sewers, expected life of the liner, and its structural properties. Therefore, in an effort to address this shortcoming, this paper presents the outcome of a destructive testing protocol conducted on liners samples extracted from sewers rehabilitated using CIPP. Samples used in the testing process were collected from two locations in the sewer network that were rehabilitated over 1 decade ago. Testing the liner included examining the physical properties (e.g., thickness, annular gap, and so on), flexural properties, and tensile properties. The results demonstrate excellent current structural properties and strongly indicate that the liner will meet the anticipated lifetime. Deterioration of liner is expected to take place at a low rate. This conclusion remains valid as long as the current factors influencing structural properties do not change drastically over time.
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Published In
Journal of Performance of Constructed Facilities
Volume 29 • Issue 4 • August 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jul 14, 2013
Accepted: Dec 26, 2013
Published online: Aug 25, 2014
Discussion open until: Jan 25, 2015
Published in print: Aug 1, 2015
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