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http://dx.doi.org/10.11001/jksww.2017.31.1.007

Prediction of Long-Term behavior of polyethylene pipe buried underground  

Lee, Jae-Ho (Department of Civil Engineering, Hongik University)
Kim, Bin (Department of Civil Engineering, Hongik University)
Yoon, Soo-Hyun (Department of Civil Engineering, Hongik University)
Kim, Eung-Ho (Department of Civil Engineering, Hongik University)
Publication Information
Journal of Korean Society of Water and Wastewater / v.31, no.1, 2017 , pp. 7-12 More about this Journal
Abstract
Most of existing buried pipes are composed of reinforced concrete. Reinforced concrete pipes have many problems such as aging, corrosion, leaking, etc. The polyethylene (PE) pipes have advantages to solve these problems. The plastic pipes buried underground are classified into a flexible pipe. National standard that has limited the long-term vertical deformation of the pipe to 5% for flexible pipes including PE pipe. This study presents a prediction for the long-term behavior of the polyethylene pipe based on ASTM D 5365. This prediction method is presented to estimate by using the statistical method from the initial deflection measurement data. We predict the behavior of long-term performance on the double-wall pipe and multi-wall pipe. As a result, it was found that the PE pipe will be sound enough more than 50 years if the compaction of soil around the pipe is more than 95% of the standard soil compaction density.
Keywords
Buried pipe; Flexible pipe; Long-Term Behavior; Polyethylene pipe;
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