Waterproofing and Chemical Protection of Sewer Tunnel
Erin Mills Trunk Sewer, Region of Peel, Ontario, Canada
Cem-Kote Barrier Cote 100 & Cem-Kote Flex CR
Waterproofing and H2S protection of segmental concrete sewer tunnel, with an internal diameter 2.4 m (7’ 10”) and over 900 meters (1,000 ft.) long. This section was a test for a total sewer tunnel, that is approx. 10 km (6 miles) long.
Cem-Kote Barrier Cote 100 & Cem-Kote Flex CR system was selected due to the following advantages:
Can be applied to water saturated surface moisture, and at high humidity.
Stops water penetration from the Negative side
Prevents debonding due to vapor condensation resulting in high capillary pressures at concrete-membrane interface
Eco-Friendly & Non-Toxic
Cost Effective – less than 50% of the Applied Cost of polymer coatings
After stopping active water leaks, the surface of the liner was pressure washed, and 1 mm (40 mils) thick coating of Cem-Kote Barrier Cote 100 spray applied and brushed.
The coating was allowed to air cure, before cleaning the surface using pressure water
One coat of Cem-Kote Flex CR – 1 mm 940 mils) thick, was spray applied and brushed to eliminate possible pinholes.
Results of bond test were outstanding, and data is available on request.