Perth ground conditions
Know your ground.
Grout injection depends on the ground it goes into. Here's how Perth's ground conditions relate to the work we do.
Why it matters
The ground shapes the treatment.
Micro-fine grout injection involves pumping a fine cement-based grout into the ground. In suitable soils, it spreads between the soil particles and hardens, creating a stronger, more stable mass.
How well the grout spreads depends on the soil it’s injected into. That’s why ground conditions shape every treatment we propose, and why no two sites are treated exactly the same.
Every site is different
Ground conditions can vary from one property to the next. Some projects require a geotechnical or structural engineer to assess the ground and specify the treatment. Our site observations do not replace an engineering assessment.
Perth’s ground
What’s under Perth.
A general guide only. What’s under your property is confirmed on site, not assumed from a map.
- 01Generally well suited
Sand
Much of the Perth metropolitan area sits on the sandy soils of the Swan Coastal Plain. Grout injection generally works best in sandy, granular soils like these, which allow the grout to flow between the particles.
- 02Can contain voids
Limestone
Limestone lies beneath many of Perth's coastal suburbs, often below a layer of sand. Limestone can contain voids and cavities, which can be difficult to reach without major excavation.
- 03Suitability varies
Clay & silt
Clay and silt occur in parts of Perth too. These low-permeability materials can restrict how far grout spreads, so suitability needs to be considered for each site.
Perth ground, on site
