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Mountain Grout products have earned a fine reputation for use in dam repair. The photographs below are “before” and “after” of a job that typifies the innovative resources of Green Mountain International. |
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| The restoration of this dam and spillway were to be achieved with traditional concrete repair materials. The stack pile in the center of the top photo was placed to pump cement grouts. The voids under the spillway were 6 to 10 feet deep. The flow of the super cold water was so great that the cement grouts were simply washed downstream. The outside temperature was below freezing, the water temperature was 33°F. The objective of using the polyurethane system was to slow the flow of water to the point where the cement grouts could be used. Also, an anchoring system was to be placed into the bedrock.
Mountain Grout I.S.P. was chosen to achieve this goal. I.S.P. (Instant Set Polymer) reacts almost instantly (1 second) and is pumped 1:1 through a static mixer system. The benefit of this system is the ability to use the materials in super cold environments and the ability to site adjust the reaction profile. In this case the material needed to react instantly. For other projects, Green Mountain supplies systems that react more slowly -- up to 6 minutes! |
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The photo on the right is the “after.” The voids under the spillway were totally filled, the channels under the spillway (allowing the water to exit) were sealed and the contractor was then able to proceed. |
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