A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Challenging Rehabilitation of a Trunk Sewer Using Sprayed Geopolymer Lining in Ontario
The 16th Avenue Sanitary Trunk Sewer Rehabilitation project comprises rehabilitation of a partially deteriorated sewer located in Markham, Ontario. This 3.0-km section of 2.6-m inner diameter trunk sewer tunnel is located at depths ranging between 35 and 47 m below ground surface. Based upon the results of a Pilot Study, the Regional Municipality of York (York Region) proceeded with the full rehabilitation using sprayed geopolymer as the permanent structural sewer lining. Numerous challenges were anticipated and encountered during construction including installing key bypass system components at depths of 47 m, sewer waterproofing with groundwater heads of 45 m, and considerations for optimal geopolymer spray application. An important lesson learned was that it is essential for infiltration to be adequately controlled for the geopolymer to be applied to a substrate free of flowing water to achieve sewer lining rehabilitation with adequate long-term performance. The first 1.5 km of the planned 3.0 km of sewer rehabilitation on 16th Avenue was completed in October 2019 and an inspection was conducted after 6 months in-service (March 2020) showing that the lining was performing as designed.
Challenging Rehabilitation of a Trunk Sewer Using Sprayed Geopolymer Lining in Ontario
The 16th Avenue Sanitary Trunk Sewer Rehabilitation project comprises rehabilitation of a partially deteriorated sewer located in Markham, Ontario. This 3.0-km section of 2.6-m inner diameter trunk sewer tunnel is located at depths ranging between 35 and 47 m below ground surface. Based upon the results of a Pilot Study, the Regional Municipality of York (York Region) proceeded with the full rehabilitation using sprayed geopolymer as the permanent structural sewer lining. Numerous challenges were anticipated and encountered during construction including installing key bypass system components at depths of 47 m, sewer waterproofing with groundwater heads of 45 m, and considerations for optimal geopolymer spray application. An important lesson learned was that it is essential for infiltration to be adequately controlled for the geopolymer to be applied to a substrate free of flowing water to achieve sewer lining rehabilitation with adequate long-term performance. The first 1.5 km of the planned 3.0 km of sewer rehabilitation on 16th Avenue was completed in October 2019 and an inspection was conducted after 6 months in-service (March 2020) showing that the lining was performing as designed.
Challenging Rehabilitation of a Trunk Sewer Using Sprayed Geopolymer Lining in Ontario
Headland, Paul (author) / Royer, Joseph (author) / MacIntosh, Glenn (author) / Servera, Vin (author)
Pipelines 2021 ; 2021 ; Virtual Conference
Pipelines 2021 ; 76-85
2021-07-29
Conference paper
Electronic Resource
English
Cured-in-Place Lining of a Large Diameter Trunk Sewer
| British Library Conference Proceedings | 1999