• Title/Summary/Keyword: Sewer pipe repair process

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Improvement of strength and prevention of twist strain in sewer pipe using glass fiber and twist prevention band (유리 섬유와 뒤틀림 방지 밴드를 이용한 하수관거의 강도 및 뒤틀림 개선 방안 연구)

  • Hong, Seok In;Im, Jiyeol;Gil, Kyungik
    • Journal of Wetlands Research
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    • v.19 no.1
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    • pp.63-68
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    • 2017
  • Maintenance of sewer pipe process sewer pipe repairing process is necessary for deterioration of sewer pipe. In this research, analysis on performance (strength and twist strain) of eco-friendly and even expanded liner process using glass fiber and twist prevention band. As a results, tensile strength, bending strength and failure load is increased after the sewer pipe repairing process than advanced research results. And sewer pipe after the this process obtained advantage of prevention of twist strain and economic. After the this research, sewer pipe repairing process using glass fiber and twist prevention band could be suggest the eco-friendly and effective sewer pipe repairing process.

Failure Risk Assessment of Reinforced Concrete Sewer Pipes on Joint-Related Defects (원심력철근콘크리트관의 결함에 따른 심각도 평가 -이음부 사례를 중심으로-)

  • Han, Sangjong;Shin, Hyunjun;Hwang, Hwankook
    • Journal of Korean Society of Water and Wastewater
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    • v.27 no.6
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    • pp.787-796
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    • 2013
  • Sewer joint-related defect is one of the most common domestic sewer defects along with the lateral pipe problem. However, there are currently no criteria that precisely assess the joint-related sewer defects. Therefore, this study examined the joint-related sewer defects found in domestic circumstances, classified them according to the suggested defect code, and presented the examples of defect pictures. Each defect code was organized as the process of out of pipeline alignment (OPA) which shows the progress in deterioration. Each defect was classified into 5 grades depending on appropriate repair and rehabilitation method. The result of this study is expected to be useful for domestic CCTV inspectors to assess the sewer condition and helpful for managers to make a decision of repair and rehabilitation.