Effective Shoring for Open-Grade Materials
Groundworks provides specialized excavation shoring using polyurethane injection, ideal for stabilizing open-grade materials and granular aggregates such as pea gravel, 57 stone, and loose sands. This shoring solution strengthens the soil base, reduces additional shoring requirements, and offers protection against groundwater intrusion, keeping urban excavation zones dry and stable.
Targeted Shoring for Open-Grade Excavation Zones
Groundworks’ polyurethane injection offers a fast, efficient shoring solution designed to stabilize soils with significant void spaces, like open-grade materials. Perfect for granular aggregates and loose particles, this shoring process minimizes traditional shoring needs, fortifies the excavation zone, and helps reduce groundwater intrusion into high-risk excavation areas.
Advanced Excavation Shoring with Polyurethane for Open-Grade Materials

Our polyurethane injection shoring solution stabilizes open-grade materials and granular aggregates, creating a reinforced base for high-risk excavation areas. Injected polyurethane expands to fill voids and bind loose particles, offering an effective shoring solution that reduces the need for traditional shoring equipment. As a secondary benefit, polyurethane helps restrict groundwater movement into the excavation zone, reducing pumping needs and lowering environmental treatment costs, particularly in urban projects with tight timelines.
Indicators of Shoring Needs in Open-Grade Excavation Zones
Excavation sites with open-grade materials or granular aggregates are prone to shifting, making effective shoring essential. Recognize these signs to maintain project stability.

- Loose, Shifting Soil Composition: Materials like gravel or sand are susceptible to movement, requiring added shoring support.
- Open-Grade Soil with Large Voids: Large spaces between particles make soils challenging to stabilize without shoring.
- Limited Space for Traditional Shoring: Constrained areas where traditional shoring is difficult to install.
- Proximity to Sensitive Structures: Excavation near existing foundations requires precise shoring to prevent structural impact.
- Risk of Groundwater Intrusion: High-void soils are more susceptible to groundwater entry, increasing the need for pumping.
Benefits to Excavation Support
Groundworks’ polyurethane injection provides an efficient and effective shoring solution for excavation zones, specifically designed to stabilize open-grade materials and granular aggregates, reducing reliance on traditional shoring.

- Rapid Shoring Installation: Polyurethane injection quickly stabilizes loose materials, providing immediate shoring support.
- Optimized for High-Void Soils: Polyurethane fills large gaps and stabilizes open-grade soils, enhancing shoring performance.
- Strengthens the Soil Base: Reinforces granular aggregates, creating a load-bearing foundation in excavation zones.
- Reduces Shoring Requirements: Minimizes the need for bulky shoring materials.
- Restricts Groundwater Movement: Limits groundwater intrusion, reducing pumping and environmental costs.
- Effective in Confined Spaces: Perfect for remote or tight excavation areas.
Shore Up Open-Grade Excavation Sites with Groundworks’ Polyurethane Shoring Solutions.
Products We Use To Fix Excavation Support
Polyurethane Injection

What We Do
Our high-density polyurethane is injected beneath foundations to stabilize the soil, filling voids and reconnecting displaced soil layers. This quick-curing solution provides immediate structural support without the need for extensive excavation.
How It Works
Polyurethane is precisely injected at critical points to re-establish soil connectivity and reinforce foundation stability. It quickly expands to fill gaps and bind loose soil, creating a dependable support system under the structure.
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Solutions for Diverse Industries
From government projects to industrial facilities and commercial developments, Groundworks delivers engineering-led foundation solutions to tackle the toughest challenges across a wide range of sectors.
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FAQs
Polyurethane fills voids within open-grade materials and granular aggregates, binding loose particles to provide effective shoring support.
Yes, polyurethane can restrict groundwater intrusion into excavation zones, which reduces pumping requirements and minimizes environmental impact.
Yes, polyurethane injection is ideal for shoring in tight or remote locations where traditional shoring may not fit.
Polyurethane provides targeted shoring support, reducing the need for additional shoring materials while stabilizing the base.





