Chemical Grouting

Chemical grouting is an effective and proven method of pipe rehabilitation. It stops groundwater from entering the sewer pipe through openings in manholes, joints, or connections.

The Benefits

When installed properly, the grout will last for years.

Fills Cracks Completely
It can penetrate any crack that will allow water movement, and fill it with a permanent waterproof seal from the inside of the structure to the outside, from top to bottom.

Cost Effective
Chemical grouting saves on unnecessary treatment plant costs and those costly dig-ups. There is also the benefit of very limited disruption to roadway traffic.

The Solution for Many Situations

Grouting Decommissioned Connections
Services that are no longer in use or required are decommissioned. Instead of capping the abandoned service, sometimes the City also requires that the service be filled with grout. Should you need this done, we can easily use our truck-mounted grout system. Call us for a quote.

Surface Interface Grouting
Sometimes the pipe leaks where the service pipe connects to the mainline pipe (a.k.a. the interface). We have the equipment to stop infiltration at the interface. After isolating the interface, grout is pumped into it and then tested to make sure it has been sealed.

Mainline Grouting
Sometimes the pipes have faulty joints or cracks. In these cases, the joints are air-tested first. If it fails the air test, then grout is pumped into the joint (or crack). The grout forms a gel that helps prevent water coming into the pipe. As long as your pipes are 150 mm (6”) to 1050 mm (42”) in diameter, we can seal it. The joint is retested after the grouting process. The procedure is repeated until the joint has passed the air test.

About the Grout

Types of Grout Used
Acrylamide – This type of chemical has been used for many years in North America with great success.
Urethane – This pre-mixed grout is easy to apply and has great compressive strength. However, it requires a longer curing period in wet locations.

Chemical Information
Please refer to our grout supplier Avanti’s website for more information about the grout we use. You may also contact us for further information about our chemical grouting service.