servicespermeation grouting

Permeation Grouting

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What is Permeation Grouting?

Permeation grouting strengthens granular and permeable soils by injecting low-viscosity polymer resins into the pore spaces of the soil. The process binds the soil matrix without altering its structure, forming a watertight, durable mass. URETEK’s trenchless polymer injection techniques increase soil strength, reduce permeability, and restore stability beneath critical infrastructure.

Problems It Solves

  • Groundwater infiltration causing erosion and soil loss
  • Unstable granular soils beneath foundations or utilities
  • Settlement or movement in permeable soil environments
  • Leakage around tunnels, retaining walls, or culverts
  • Weak bearing capacity in sandy or loose soils

Types of Polymers Used

High-Permeation Polyurethane Resins

  • Penetrates fine-grained or granular soils to seal and strengthen
  • Improves density and reduces permeability
  • Cures rapidly to stop active infiltration

Structural Polyurethane Resins

  • Creates rigid load-bearing zones beneath structures
  • Enhances long-term performance and stability
  • Provides durable reinforcement in high-stress areas

Hydro-Insensitive Polymers

  • Expands and cures in saturated or flowing water conditions
  • Maintains bond strength under hydrostatic pressure
  • Prevents erosion and soil migration in wet environments
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Benefits of Permeation Grouting

Permeation grouting with URETEK’s trenchless technology improves soil strength and water tightness in granular formations. The process delivers fast, controlled stabilization that prevents settlement and protects surrounding structures.

Seal and Stabilize Soils with Precision Polymer Injection

  • Strengthens loose or permeable soils without excavation
  • Blocks groundwater migration and seepage
  • Improves load-bearing performance beneath structures
  • Provides controlled, uniform soil treatment

Key Applications

Foundations & Slabs

Improves bearing strength and prevents settlement in granular soils

Tunnels & Shafts

Seals infiltration pathways and stabilizes soils under pressure

Retaining Walls & Abutments

Prevents erosion and strengthens backfill zones

Utility Corridors

Stops groundwater movement and reinforces trench soils

Water & Wastewater Facilities

Protects below-grade structures from infiltration and leakage

Transportation Infrastructure

Stabilizes granular soils beneath roadways, railways, and bridge approaches

Industries & Applications

Permeation grouting supports multiple industries and infrastructure types, including:

Transportation Infrastructure

Transportation Infrastructure

Stabilizes soils and prevents erosion beneath highways, rail lines, and bridges.

Municipal Systems

Municipal Systems

Controls groundwater migration beneath roadways and utility corridors.

Commercial & Industrial Sites

Commercial & Industrial Sites

Strengthens soils beneath buildings, tanks, and concrete pads.

Water & Wastewater Infrastructure

Water & Wastewater Infrastructure

Seals infiltration paths and improves subgrade stability near treatment assets.

Marine & Coastal

Marine & Coastal

Reduces seepage and stabilizes granular soils behind seawalls and embankments.

Energy & Utility

Energy & Utility

Reinforces soils around pipelines, vaults, and power facilities.

How Our Process Works

1

Investigation

Soil composition and permeability analyzed to define grouting zones.

2

Planning

Injection pattern and polymer selection tailored for site conditions.

3

Access

Small-diameter ports installed with minimal disruption.

4

Injection

Low-viscosity polymers permeate and bond soil grains for watertight stability.

5

Monitoring

Pressure and flow tracked to ensure uniform resin distribution.

6

Validation

Post-injection testing confirms improved soil density and reduced permeability.

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