| After injection has taken
place the chemical grout can be made to foam, expand and fill
the void forming a tight, impermeable elastomeric seal, stopping
the water flow (infiltration). Because the grout is on the outside
of the manhole it cannot be pushed back into the sewer system.
This water-tight collar adheres to the outer surface of the
pipe of manhole where it will stay indefinitely unless removed
by excavation or exposed to sunlight for long periods of time.
If the groundwater pressure increase, the collar will be pressed
even more tightly against the structure, increasing it's ability
to stop leaks.
The chemical grout is:
- Solvent free, non-flammable
- Has excellent adhesion to most surfaces including concrete,
brick and mortar
- Resistant to most organic solvents, mild ac ids and alkalis
- Rapidly forms a highly resilient flexible seal that allows
movement to the crack, fracture or joint
- Reacts with sea (saline) or mineral water
Click here to read more about Chemical
Grouting>
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