Pingree Station Compaction Grouting
The Job
CJGeo was contracted to provide polyurethane compaction grouting at the Pingree Station on the Union Pacific Railroad, used by METRA in Chicago. Our work supported a retaining wall and the new station platform. We repaired the retaining wall and reconstructed the surrounding area. The project team needed a quick, reliable ground improvement solution. They wanted to avoid disrupting the tight construction schedule.
Performing the polyurethane compaction grouting.
The Challenge
The project had a strict requirement. The project engineer specified a 2 million-pound experience minimum for the polyurethane contractor. Very few contractors in the country can meet this high threshold. Additionally, the project had a tight schedule. We needed to complete the grouting work quickly. This would allow the next phase of construction to begin on time.
The Solution
CJGeo proposed using CJGrout 48NHL geotechnical polyurethane for the compaction grouting. Our extensive experience with this material, including numerous large-scale projects, allowed us to meet the project’s stringent 2 million-pound experience requirement.
A single CJGeo crew mobilized to the site and performed the polyurethane injection work in just one day. The material was injected to densify the soil and improve bearing capacity under the retaining wall, providing a stable foundation for the new construction. The fast-acting nature of the CJGrout 48NHL allowed the general contractor to proceed with backfilling the very next day, keeping the entire project on its accelerated schedule.
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? Reach out to one of our experts today to see how CJGeo’s innovative solutions can help.
