Void Filling & Backfill Stabilisation
Backfill loss, washout, and poorly compacted soils can compromise retaining wall performance long before visible movement occurs. Minova stabilises these ground conditions with high-performance resin and grout systems designed to strengthen weak zones, fill hidden cavities, and rebuild the ground’s load-bearing capacity. Our CarboPur polyurethane resins, Tekfoam lightweight foams, and durable cementitious grouts consolidate fractured soils, seal pathways of water ingress, and prevent further erosion behind the wall. By delivering targeted injections with controlled expansion, we restore ground integrity with minimal disruption to your operations. Our proven approach improves stability, reduces long-term risk, and extends the service life of critical retaining structures.
Engineering Challenge
- Hidden Voids, Piping and Backfill Loss
- Poor Compaction and Collapsible Backfill
- Fines Migration through Drains, Joints and Interfaces
- Water Ingress, Saturation and Elevated Pore Pressures
- Loss of Contact between Wall and Backfill (Interface Gapping)
- Uncontrolled Injection Spread, Heave and Over‑pressurisation Risk
- Resin/Grout Selection: Viscosity, Expansion and Set Control
- Restoring Drainage Function and Filter Integrity
- Verification and QA/QC: Proof Grouting, Trials and As‑Built Evidence
- Service Proximity, Utilities and Live‑Site Access Constraints
Product Categories
Pumpable Grouts
Injection Chemicals
Sprayed Membranes and Coatings
Case Studies
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Our experts work closely with you to understand your unique needs and provide hands-on guidance — from first consultation to project completion.