Compaction Grouting | Piling Contractors | CFA Piling | Keller UK

Compaction Grouting

Compaction grouting is the injection of very stiff, low slump (25-75mm) mortar-type grout under relatively high pressures to displace and compact soils in place.

Most effective in cohesionless soils but can also be effective in the short term in finer grained soils where disturbance has occurred. The main advantages of the system are that we can achieve;

  • Controlled and accurate placement.
  • A predictable degree of improvement.
  • Re-compaction of  soils within vicinity of the problem rather than waiting for settlement to reach adjacent structure foundations.
  • All grout pipes can generally be installed outside building.

We normally use low slump sand-cement grouts, sometimes with additives.

Method

Grout pipes are installed in a pre-determined design pattern (vertically or angled) to the required depth.  Grout is pumped until one or a combination of the following criteria is met:

  • Refusal at maximum pressure is achieved.
  • A pre-determined maximum grout volume is reached.
  • Ground or structure heave is observed.

Applications are numerous but the system is most commonly used in filling solution features and where settlement has occurred due to workings or features collapsing.

Compaction Grouting

Compaction Grouting is the injection of very stiff, low slump (25-75mm) mortar-type grout under relatively high pressures to displace and compact soils in place. It is most effective in cohesionless soils but can also be effective in the short term in finer grained soils where disturbance has occurred. The system is ideal for treating solution features in chalk, limestone or other soluble strata.

Where we've done it

Our solutions are used across the construction industry from residential development, infrastructure and civil engineering to the energy and resource sectors.

Other things we do

We deliver cost effective foundation and ground engineering solutions safely - click on the arrows to find the techniques you are looking for.

Contact Us

Call us to discuss if you want help with a grouting solution...

Relevant Offices
Coventry

Contacts for Assistance:
Anthony Lucas (07908 502122)
 

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