Cold joint and crack injection of grout joints in Natural Boulder, Rock, Stone, River Seawall

SealBoss 1510 Water Stop Foam – NSF Listed and Drinking Water System Component Approved injection System

Along the beautiful and pristine Arkansas river is the Granite Boat Chute. For the first time in more than half a century, rafters and boaters can float the Arkansas River from Leadville to Cañon City without disruption. 

During a repair last season on the divider seawall and re-installation of a section of the boulder wall a cementitious grout was used to bond boulders together and to bond to existing boulders and existing grout. Over time some of the cold joints between the old grout and new grout started leaking. Leaks also developed at bond failures between the natural boulders and rocks, and the cementitious grout. Hairline cracks also developed to contribute to water seepage.

SealBoss 1510 NSF hydro active foam, an environmentally friendly product with NSF drinking water contact certification, was injected into the areas of bond failure to seal the boulder seawall from water intrusion and to prevent future water induced issues with freeze / thaw cycles that contribute to further damages and eventually could lead to blowing out the seawall.

Spacing of the packers was at an interval of 12” and the catalyst was initially at a 5% by volume to allow for travel down in to the areas between the stone to ensure a proper seal throughout the conglomeration.  Later the accelerator was increased to a 10% by volume to 1510 to foster a more rapid reaction and cure to fill in some of the remaining voids. 

In conclusion, this project outlines innovative solutions that can be employed to address natural wear and erosion challenges.

The use of SealBoss 1510 NSF hydro active foam showcases the potential of polyurethane foam technology in ensuring the longevity and safety of such structures. By addressing the cold joints, bond failures, and hairline cracks, the SealBoss system not only rectified the immediate issues but also fortified the seawall against future damages.