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

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  • URLhttps://db.koreascholar.com/Article/Detail/327390
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상하수도학회지 (Journal of the Korean Society of Water and Wastewater)
대한상하수도학회 (Korean Society Of Water And Wastewater)
초록

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.

저자
  • 김진원(수자원기술주식회사) | Jinwon kim (WARECO)
  • 김동현(수자원기술주식회사) | Donghyun Kim (WARECO)
  • 이영건(수자원기술주식회사) | Younggun Lee (WARECO)
  • 이세완(수자원기술주식회사) | Sewan Lee (WARECO)
  • 김두일(단국대학교) | Dooil Kim (Dankook University) Corresponding author