SealGuard Inc Polyurethane Grout

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Water Sealing Blog

Curtain Grouting with Lances

By Chris on 11-05-2019

In many situations, controlling water infiltration from inside the structure is not an option.  These concrete waste tanks were allowing groundwater to enter, creating a substantial expense for the treatment plant.  The solution was to curtain grout the exterior walls of the structures with polyurethane.  Curtain grouting consists of using injection lances to penetrate the soil in order to get the grout to the desired depth.  Hyperflex, the polyurethane grout used, is NSF approved and reacts (foams) with the presence of moisture.  Hyperflex will migrate into the fractures of the structure to seal off the infiltration in addition to creating a foam barrier.  32,000 gallons per day of freshwater was saved from being treated with sewage on this job.


Concrete Segment Polyurethane Injection

By Chris on 09-24-2019

Leaking concrete segments are injected with polyurethane grout in a tunnel that was created by a tunnel boring machine. ... Read More

Tunnel Grouting after a TBM

By Chris on 08-27-2019

Tunnel boring with a TBM creates many opportunities for polyurethane grouting. For instance, the tail seal brushes of... Read More

Injection Into Steel

By Chris on 08-22-2019

Injecting polyurethane grout into steel is not as common as concrete injection, however it can still yield great results... Read More