| Fracture Grouting |
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Because the process requires only
that the soil is fractured, Fracture Grouting may be used in most
low permeability soil types ranging from weak rocks to clays.
- Reduction or reversal of differential
settlement
- Reduction or reversal of total settlement
- Prevention of the settlement of
buildings as tunneling is carried out
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- Installing grout injection tubes
to a predetermined pattern
- Monitoring movements by either precise
leveling or the use of special settlement systems
- Injection of grout into sleeves
with careful process control to induce compensating movements
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- Selection and positioning of monitoring
systems
- Position of injection tubes
- Initial injection (conditioning)
- Injection during construction to
control settlements
- Injection post construction
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- The control of settlement is carried
out from outside the building and hence there is no disruption
to the occupants
- The process can be repeated allowing
continued control of settlement (if required)
- Control can be very selective inducing
level changes of varying amounts at specific locations
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- Sink Shaft
- Install sleeved pipes
- Condition grout
- Inject grout as necessary
- Reinjection unlimited, without redrilling
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- All stages monitored from installation
of tubes to actual injection
- Grout mix, injection pressure, volume
and pump rate carefully designed and monitored
- Computer monitoring (real time)
of structure movements
- Full documentation for every stage
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- Precise levelling/surveying
- Water level system
- Electro
levels
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