Transportation Infrastructure
Tunnels, subways, underpasses
servicescurtain grouting
Curtain Grouting
What is Curtain Grouting?
Curtain grouting is a subsurface waterproofing technique where low-viscosity grout is injected behind structures to form an impermeable barrier. This trenchless method blocks groundwater infiltration, reinforces soils, and protects underground infrastructure from long-term deterioration.
Problems It Solves
- Groundwater infiltration behind walls or into buried structures
- Hydrostatic pressure that threatens retaining systems
- Erosion and soil piping through joints or bedding layers
- Joint separation and cracking in precast elements
- Surface settlement or sinkholes near underground assets
Types of Polymers Used
High-Density Polyurethane Foams
- Expands to seal voids behind structures
- Provides lightweight, non-invasive stabilization
- Supports long-term durability without excavation
Structural Polyurethane Resins
- Strengthens soils around tunnels and retaining walls
- Creates rigid barriers against groundwater intrusion
- Restores load-bearing capacity in saturated soils
Hydro-Insensitive Polymers
- Expands and cures under flowing or saturated conditions
- Effective for waterproofing in active infiltration zones
- Maintains impermeable barriers over decades of service
Benefits of Crack Repair
Curtain grouting provides trenchless, long-lasting barriers that prevent groundwater intrusion and stabilize surrounding soils. This process enhances structural performance while extending the life of critical assets.
Waterproof Protection Where It Matters Most
- Creates continuous impermeable barriers behind structures
- Blocks infiltration without the need for excavation
- Effective in wet or high-flow groundwater conditions
- Extends service life of tunnels, vaults, and retaining walls
Key Applications
Tunnels & Underpasses
Waterproofs liners and blocks infiltration in transit and utility corridors
Manholes & Sewer Interceptors
Seals exterior infiltration pathways to protect municipal systems
Retaining & Cut-Off Walls
Prevents hydrostatic pressure buildup and soil piping
Culverts & Outfalls
Restores watertight integrity in buried drainage structures
Utility Vaults & Chambers
Stops groundwater intrusion in below-grade facilities
Stormwater Structures
Protects pits, drains, and outfalls from long-term degradation
Industries & Applications
Curtain grouting solutions support infrastructure across industries where groundwater control is critical. By creating impermeable barriers, this process ensures long-term performance in transportation, municipal, industrial, and marine environments.
Municipal Systems
Municipal Systems
Manholes, stormwater systems, utilities
Industrial Facilities
Industrial Facilities
Vaults, tanks, process facilities
Energy & Utility
Energy & Utility
Pipelines, underground facilities
Marine & Coastal
Marine & Coastal
Bulkheads, seawalls, retaining walls
Water & Wastewater
Water & Wastewater
Treatment plants, lift stations, interceptors
How Our Process Works
1
Investigation
Inspections and moisture mapping identify infiltration sources
2
Planning
Injection grid and grout type designed based on structure and geology
3
Access
Small-diameter rods or packers placed behind the structure with minimal disruption
4
Injection
Grout injected at controlled pressures to form continuous barriers
5
Monitoring
Flow, pressure, and material returns observed to ensure proper coverage
6
Validation
Post-injection testing confirms effectiveness and barrier continuity
Get Started with Expert Support
Phone
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