Service 03 / Perth, WA
Retaining wall support
Grout injection to provide additional backing and support to existing retaining walls, subject to site conditions.
Overview
How it works.
Where site conditions allow, grout is injected into the soil around an existing retaining wall. As it hardens, it stabilises the soil and provides additional backing and support to the wall.
Grout can often be injected through small access points, reducing the need for extensive excavation. Some drilling, removal of paving or localised digging may still be required, depending on access and the treatment area.
Used for
- Providing additional backing to existing retaining walls
- Stabilising soil around retaining walls
Good to know
Before you start.
- 01
It won't straighten a wall
Grout injection focuses on stabilising the ground and providing additional support. It does not return a retaining wall to its original position.
- 02
Failing walls need an engineer
Where a retaining wall is failing, an engineer may need to assess the problem and specify the treatment. Our site observations do not replace an engineering assessment.
- 03
Best suited to sandy soils
Grout injection generally works best in sandy, granular soils that allow the grout to flow between the particles. Clay, silt and other low-permeability materials can restrict its spread, so suitability is considered for each site.
- 04
Look at drainage too
Long-term performance depends on the cause of the original problem, so issues such as leaking pipes or poor drainage may need to be addressed as well.