Ground engineering · Ground improvement
Soil stabilisation binder spread rate calculator
Binder spread rate and quantity from the target binder content, dry density and stabilised depth.
Standard: Austroads AGPT04D / stabilisation practice
Open the live calculator → All ground engineering calculators
Inputs in the worked example
The live calculator starts with these values; change any of them and every result, check and diagram updates instantly.
| Input | Value | Unit |
|---|---|---|
| Binder content (by dry mass) | 3 | % |
| Maximum dry density | 1.85 | t/m³ |
| Stabilised depth | 300 | mm |
| Area | 5000 | m² |
| Lime availability / purity | 90 | % |
Worked example — results
| Result | Value | Unit |
|---|---|---|
| Spread rate p ρd t / purity | 18.50 | kg/m² |
| Total binder | 92.50 | t |
- ✓ Spread rate ≥ 5 kg/m² (practical min)
Method, formulas and assumptions
- Spread rate p ρd t / purity = 3/100*1.85*1000*300/1000/(90/100) = 18.5 kg/m²
- Total binder = 18.5*5000/1000 = 92.5 t
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For preliminary design and education. Check every result against the current standard and your own engineering judgement before use.