Chemical Grouting
Seals infiltration paths and stabilizes surrounding soils
solutionsmanhole rehabilitation
Manhole Rehabilitation
What is Manhole Rehabilitation?
Manhole rehabilitation restores the structural integrity and watertightness of sewer and utility access points. Using trenchless polymer injection, leaks are sealed, voids are filled, and soils are stabilized around manhole structures to extend system life and prevent costly overflows.
Problems Solved
- Groundwater infiltration through joints, cracks, and walls
- Settlement or voids undermining manhole bases
- Soil erosion around sewer access structures
- Structural degradation from infiltration or chemical exposure
- Excess inflow increasing treatment plant costs
Types of Polymers Used
High-Density Polyurethane Foams
- Expands to densify and stabilize loose backfill soils
- Provides lightweight reinforcement without added soil pressure
- Cures rapidly to minimize operational disruption
Structural Polyurethane Resins
- Creates rigid reinforcement zones behind walls and utilities
- Transfers structural loads to stable ground layers
- Extends service life of supported structures
Hydro-Insensitive Polymers
- Expands and cures in wet or groundwater conditions
- Seals voids and prevents erosion in saturated soils
- Provides long-term durability in challenging sites
Benefits of Manhole Rehabilitation
Manhole rehabilitation with polymer injection seals leaks, stabilizes soils, and restores watertight integrity. These trenchless solutions extend infrastructure life and reduce costly treatment expenses.
Restore Performance in Critical Sewer Access Structures
- Seals leaks and infiltration in manhole structures
- Restores support and stability at manhole bases
- Provides trenchless rehabilitation without excavation
- Reduces wastewater treatment and maintenance costs
Key Applications
Municipal Sewer Systems
Seals leaks and stabilizes soils in city-owned manholes
Utility Access Points
Protects vaults and conduits from infiltration and erosion
Industrial Facilities
Restores watertight performance in plant utility systems
Commercial Developments
Protects sewer access structures in high-use areas
Transportation Corridors
Stabilizes manholes beneath highways, roads, and rail lines
Storm water Systems
Seals leaks in manholes connected to storm water drains
Services
Manhole rehabilitation is supported by these services:
Void Filling
Void Filling
Eliminates soil cavities around manhole bases
Soil Stabilization
Soil Stabilization
Reinforces weak soils supporting manhole assets
Crack Repair
Crack Repair
Seals joints and cracks allowing infiltration
Waterproofing & Leak Sealing
Waterproofing & Leak Sealing
Provides watertight barriers in sewer access structures
Curtain Grouting
Curtain Grouting
Forms external barriers to block groundwater migration around manhole walls
How the Process Works
1
Investigation
Manholes inspected for leaks, voids, or structural issues
2
Planning
Injection design tailored to manhole size and soil conditions
3
Access
Small-diameter injection points installed with minimal surface disruption
4
Injection
Expanding polymers stabilize soils and seal manhole structures
5
Monitoring
Placement tracked in real time to ensure watertight performance
6
Validation
Final inspection confirms restored stability and integrity
Get Started with Expert Support
Phone
800-240-7868Follow Us
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