Project: Offutt Air Force Base
Location: Bellevue, NE.
Owner: USAF
System: Standard Barrier Grouting
Completed: October 2018
The Army Corps of Engineers was having water infiltration problems at the slurry wall during construction of their new Strategic Command facility in Omaha, NE. JWI was called to mitigate leaks during two separate phases of construction.
JWI stopped the leaks at the tiebacks and slurry wall construction joints during phase one. JWI fabricated a specialized injection system to force acrylate ester injection resin into the tie back anchors and down the tieback tendons. This process stopped the water infiltration at the tie back construction. JWI also used a combination of urethane injection resin and acrylate injection resin at the vertical construction joints in the concrete slurry wall. This system stopped the water infiltration at these joints.
JWI was called back to the site during phase two construction. The joint between the new cast in place concrete and the top of the slurry wall was leaking into the new facility. JWI used a belt and suspenders approach to the problem using both urethane and acrylate injection at the same joint. The joint was not typical for injection waterproofing in that blue foam insulation was placed between the slurry wall and new concrete. Urethane was used to fill all larger spaces and to stop flowing water. Acrylate was then pumped to give a high elongation capability to the water leak repair. JWI was successful in stopping the water infiltration problem.