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Trenchless Mechanized Inspection and Retrofitting Strategy for Buried Sewerage Systems


Affiliations
1 Construction Automation and Robotics Group, CSIR-Central Building Research Institute, Roorkee 247 667, Uttarakhand, India
2 Structural Engineering Group, CSIR-Central Building Research Institute, Roorkee 247 667, Uttarakhand, India
 

The conventional retrofitting methods of buried sewer pipes require heavy machinery, intensive manpower, and a longer time for rehabilitation. Such methods may also damage the nearby infrastructures and landscapes. The present study explores an integrated trenchless solution for damage identification and mechanized retrofitting of domestic buried sewerage pipelines of diameter ranging from 75 to 300 mm. A front-mounted camera of the retrofitting system assesses the damage inside the sewer pipes. The retrofitting of the damaged part of buried pipe is achieved by impregnation of Glass Fiber Reinforced Polymer (GFRP) composite sheet with 100:16 epoxy and hardener ratio. The wrapping of the GFRP sheets on damaged part is done by inflation and deflation technique with a cylindrical rubber bladder connected by a flexible shaft. The retrofitted sewer pipe can be resumed after 3–4 hours of applying the impregnated GFRP composite with above retrofitting strategy.

Keywords

Damage Detection, Fiber-Reinforced Polymer, In-Pipe Retrofitting, Mechanized System, Rubber Bladder.
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  • Trenchless Mechanized Inspection and Retrofitting Strategy for Buried Sewerage Systems

Abstract Views: 129  |  PDF Views: 88

Authors

Ravindra Singh Bisht
Construction Automation and Robotics Group, CSIR-Central Building Research Institute, Roorkee 247 667, Uttarakhand, India
Dinesh Kumar
Construction Automation and Robotics Group, CSIR-Central Building Research Institute, Roorkee 247 667, Uttarakhand, India
Naman Garg
Construction Automation and Robotics Group, CSIR-Central Building Research Institute, Roorkee 247 667, Uttarakhand, India
Vikesh Kumar
Construction Automation and Robotics Group, CSIR-Central Building Research Institute, Roorkee 247 667, Uttarakhand, India
Siddharth Singh
Construction Automation and Robotics Group, CSIR-Central Building Research Institute, Roorkee 247 667, Uttarakhand, India
Sameer
Construction Automation and Robotics Group, CSIR-Central Building Research Institute, Roorkee 247 667, Uttarakhand, India
Soraj Kumar Panigrahi
Construction Automation and Robotics Group, CSIR-Central Building Research Institute, Roorkee 247 667, Uttarakhand, India
Ajay Chourasia
Structural Engineering Group, CSIR-Central Building Research Institute, Roorkee 247 667, Uttarakhand, India

Abstract


The conventional retrofitting methods of buried sewer pipes require heavy machinery, intensive manpower, and a longer time for rehabilitation. Such methods may also damage the nearby infrastructures and landscapes. The present study explores an integrated trenchless solution for damage identification and mechanized retrofitting of domestic buried sewerage pipelines of diameter ranging from 75 to 300 mm. A front-mounted camera of the retrofitting system assesses the damage inside the sewer pipes. The retrofitting of the damaged part of buried pipe is achieved by impregnation of Glass Fiber Reinforced Polymer (GFRP) composite sheet with 100:16 epoxy and hardener ratio. The wrapping of the GFRP sheets on damaged part is done by inflation and deflation technique with a cylindrical rubber bladder connected by a flexible shaft. The retrofitted sewer pipe can be resumed after 3–4 hours of applying the impregnated GFRP composite with above retrofitting strategy.

Keywords


Damage Detection, Fiber-Reinforced Polymer, In-Pipe Retrofitting, Mechanized System, Rubber Bladder.

References