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Tag Archive: seepage

  1. Earthen Dam Repair

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    Earthen dams losing water can be injected with polyurethane grout to seal the leak paths.  Here holes were drilled along the crest of the dam which enabled lances to be inserted.  The lances were then hooked up to a pump and injected with Hyperflex.  Hyperflex is a single component polyurethane grout that is moisture activated.  Hyperflex is also NSF/ANSI/CAN 61 approved for contact with potable water.  This method is less invasive and more cost effective than tradition repair methods.  Grouting was performed by grouting contractor Sub-Technical, Inc.

  2. Detention Pond Riser Leak

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    Stormwater from a parking lot was going through the joints of this detention pond riser. Polyurethane grout was injected to stop the unwanted infiltration. The polyurethane grout that was used was Hyperflex, manufactured by SealGuard, Inc. Hyperflex is a single component, moisture activated grout that is NSF/ANSI/CAN 61 approved for potable water. The grouting was performed by Sub-Technical, Inc. After the grout is cured, the excess and injection packers can be removed and patched over with concrete for aesthetic purposes.