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http://dx.doi.org/10.11001/jksww.2016.30.6.725

Investigating coating material and conditions for rehabilitation of water transmission pipe using a robotic system  

kim, Jinwon (WARECO)
Kim, Donghyun (WARECO)
Lee, Younggun (WARECO)
Lee, Sewan (WARECO)
Kim, Dooil (Dankook University)
Publication Information
Journal of Korean Society of Water and Wastewater / v.30, no.6, 2016 , pp. 725-736 More about this Journal
Abstract
There is a growing concern on the improvement of water distribution pipeline for multi-regional water supply system in Korea along with its aging infrastructure. Rehabilitation of large diameter pipeline is more efficient in cost and time compared to replacement with trenching. The procedure for rehabilitation are diagnosis, cleaning, spraying coating material, and final inspection. The internal state of pipeline was carefully diagnosed and got C grade, which required rehabilitation. We found that 17,274,787,000 Korean won could be saved after pipe surface coating because of increased C coefficient of Hazen-Williams equation. Optimal coating material was D polyurea. We also found optimal distance between spraying nozzle and pipe wall to be 70 - 80 cm, which were critical factors for coating quality. This study also illustrated the time for spray drying to be more than 30 min. These results could be used in the quality control process during rehabilitation of aged pipelines.
Keywords
A robotic system; Aged water pipeline; Internal pipe coating; Pipeline rehabilitation; Water transmission pipe;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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