Penncap Properties – Sinkhole Remediation

A joint between the asphalt parking area and curb allowed for water to drain beneath the parking area. Over time a small sink hole developed and a portion of the asphalt collapsed . Unfortunately in close vicinity was a 36” pre-cast storm drain running below. The water had eroded the soil around the storm drain but had not yet caused the storm drain to misalign or leak.

The storm drain pipe was inspected and dirt compacted to either side of it. A concrete cap was placed on top. PVC pipe was left at locations to mark the compaction grout points.

Grout Casing is drilled at the designated points until load bearing rock strata is reached.

The low mobility grout is pumped beneath the storm drain to compact the soils that had loosened due to the sinkhole.

The grout is monitored for the correct slump, volume and pressure as the compaction grouting occurs. Learn more about sink hole remediation.