The Job
This Tennessee polyurethane grouting project is located in Murfreesboro, a suburb of Nashville. As part of supporting Nashville's booming construction market, a large building supplies company built a new million square foot distribution center. They immediately began to experience joint deterioration and thunking noises with fork lift traffic. This was affecting picker tire lifespan, floor lifespan, and wire guidance systems. They reached out to a consulting engineer, who then came on board to evaluate the cause and potential solutions.
Performing the polyurethane grouting for slab curl repair.
The Challenge
This massive distribution center runs 24 hours per day, 6 days per week. It also includes a large robotic order picking operation. The owner's primary concern was ensuring that the repair work did not disrupt their operations. The consulting engineer, who had extensive experience working with CJGeo, called us to take a look.
CJGeo worked with the owner and consultant to confirm that slab curl was the cause of the joint deflection under load. The other cause, which was ruled out, was settlement of underlying soils. Settlement of underlying soils was ruled out due to the pervasiveness of the problem throughout the facility, and slight cupping of the slabs, detectable with very long straight edges.
Typical impact on operations.
The Solution
CJGeo proposed undersealing the joints using CJGrout 20SDB geotechnical polyurethane. The team chose 20SDB for its specific formulation, which provides very high mobility and minimal lifting capacity. To minimize impact to the facility, CJGeo proposed working at night when operations were slower.
CJGeo mobilized a polyurethane grouting crew to the site in May 2025. The crew drilled nearly 20,000 holes to stabilize about 45,000 linear feet of joint. They completed all work at night over six weeks onsite, resulting in zero operational impacts for the facility.
Speak With An Expert
Facing a challenge similar to this Tennessee polyurethane grouting job?
