SealGuard Inc Polyurethane Grout

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Water Sealing Blog

TBM Launch Pit Injection

By Chris on 01-28-2021

Grouting contractor Sub-Technical, Inc. injects SealGuard II into a launch pit for a tunnel boring machine to stop water infiltration. SealGuard II is fast reacting a dual component polyurethane grout. In this instance, it was injected with a pneumatic pump and a mechanical packer. Note the various injection sites on the rib. This is because the area was extremely porous. When the water infiltration was stopped in one area, it would flow to a different spot. The grouter had to "chase" each leak until it was eventually sealed.


Tunnel Boring and Grouting

By Chris on 10-22-2020

The entrance of a tunnel being created by a tunnel boring machine can be as fascinating as the TBM itself.  Countle... Read More


Leaking Valve Sealed with Grout

By Chris on 08-12-2020

A municipality needed to seal off a leaking water main valve in order to decommission the system.  They decided inj... Read More


Intake Shaft Water Leak

By Chris on 05-26-2020

Pictured is the looking down view of a high-pressure water leak, in an intake shaft of a mine. The water intrusion was 2... Read More