Response of a plastic pipe buried in expansive clay

Gallage, Chaminda Pathma Kumara, Kodikara, Jayantha, & Chan, Derek (2011) Response of a plastic pipe buried in expansive clay. Proceedings of the ICE - Geotechnical Engineering, 165(1), pp. 45-57.

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Failure of buried pipes due to reactive soil movement (e.g. shrinking/swelling) is a common problem for water and gas pipe networks in Australia and the world. Soil movement is closely related to seasonal climatic change, and particularly to the moisture content of soil. Although some research has been carried out to understand the effect of freezing and thawing of soils and temperature effects in colder climates, very limited research has been undertaken to examine the possible failure mechanisms of pipes buried in reactive soils. This study reports the responses of a 2 m long polyethylene pipe buried in reactive clay in a box under laboratory conditions. The soil and pipe movements were measured as the soil was wetted from the bottom of the box. It was observed that the pipe underwent substantial deformation as the soil swelled with increase of the moisture content. The results are explained with a simplified numerical analysis.

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ID Code: 48980
Item Type: Journal Article
Refereed: Yes
Keywords: Expansive Soil, Plastic Pipe, Hysterisis of Suction, Suction, Pipe Deformation
DOI: 10.1680/geng.9.00037
ISSN: 1353-2618
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Civil Geotechnical Engineering (090501)
Divisions: Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2011 ICE Publishing
Copyright Statement: All rights reserved
Deposited On: 05 Mar 2012 22:38
Last Modified: 07 Mar 2012 00:06

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