Pingree Station Compaction Grouting
The Job
CJGeo performed polyurethane compaction grouting at Pingree Station on the Union Pacific Railroad in Chicago. This station serves METRA commuters. Our work supported a failing retaining wall and a new station platform. The project team required a fast, reliable ground improvement solution to keep the construction schedule on track.
Performing the polyurethane compaction grouting.
The Challenge
The project engineer set a high bar for the contractor. They required the polyurethane grouting specialist to have a minimum of 2 million pounds of installation experience. Very few companies in the United States meet this threshold.
Additionally, the project had an aggressive timeline. We had to complete the soil stabilization quickly so the next phase of construction could begin immediately.
The Solution
CJGeo used CJGrout 48NHL geotechnical polyurethane for the compaction grouting. Our deep portfolio of large-scale infrastructure projects allowed us to easily meet the 2-million-pound experience requirement.
A single CJGeo crew mobilized to the site and completed all injection work in just one day. We injected the material to densify the soil and increase bearing capacity under the retaining wall. This created a stable foundation for the new platform. Because CJGrout 48NHL cures almost instantly, the general contractor began backfilling the very next day.
Speak With An Expert
Have a project similar to this Pingree Station compaction grouting project? Facing issues with lateral earth pressure, poor soils, or hard-to-access voids?
