Field performance of in-service cast iron water reticulation pipe buried in reactive clay
Chan, Derek Chun Chuen, Gallage, Chaminda, Rajeev, Pathmanathan, & Kodikara, Jayantha (2015) Field performance of in-service cast iron water reticulation pipe buried in reactive clay. Canadian Geotechnical Journal, 52(11), pp. 1861-1873.
Field monitoring is an important means for understanding soil behaviour and its interaction with buried structures such as pipeline. This paper details the successful instrumentation of a section of an in-service cast iron water main buried in an area of reactive clay where frequent water pipe breakage has been observed. The instrumentation included measurement of pipe strain; pipe water pressure and temperature; soil pressure, temperature, moisture content and matric suction, as well as the meteorological conditions on site. The data generally indicated that changes in soil temperature, suction and moisture content were directly related to the local climatic variations. The suction and moisture content data indicated that the soil profile at the site down to around 700 mm, and probably down to 1000 mm, is affected by changes in surface weather, while soil conditions below this depth appear to be more stable. Analysis of pipe strain indicated that the pipe behaves like a cantilever beam, with the top experiencing predominantly tensile strains during summer. Subsequently, these trends reduce to compressive strains as soil swelling occurs due to increase of moisture content with the onset of winter.
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|Item Type:||Journal Article|
|Keywords:||Field instrumentation, Cast-iron water main, Soil movement, Expansive soil, Moisture content, Meteorological conditions|
|Subjects:||Australian and New Zealand Standard Research Classification > ENVIRONMENTAL SCIENCES (050000) > SOIL SCIENCES (050300) > Soil Sciences not elsewhere classified (050399)
Australian and New Zealand Standard Research Classification > BUILT ENVIRONMENT AND DESIGN (120000)
Australian and New Zealand Standard Research Classification > BUILT ENVIRONMENT AND DESIGN (120000) > ENGINEERING DESIGN (120400)
|Divisions:||Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2015 Canadian Science Publishing/NRC Research Press|
|Deposited On:||03 Jun 2015 00:11|
|Last Modified:||31 May 2016 00:54|
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