Stabilize Decomposed Granite
Decomposed granite (DG) can be effectively hardened to create a durable and stable surface. This process, often called stabilization, involves binding the loose particles together with a material like cement, lime, or polymers. The goal is to reduce dust, improve compaction, and prevent erosion.
Proper preparation and application are key to a long-lasting result.
Methods of Stabilization
Here's a comparison of common stabilization methods:
| Method |
Material |
Estimated Cost (per square yard) |
Estimated Time |
| Cement Stabilization |
Portland Cement |
$3 - $6 |
1-2 days |
| Lime Stabilization |
Hydrated Lime |
$2 - $5 |
3-7 days |
| Polymer Stabilization |
Polymer Emulsion |
$5 - $10 |
24-48 hours |
Preparation Steps
- Remove Organic Matter: Clear away any vegetation, roots, or debris.
- Excavate: Dig down 4-6 inches to reach stable subgrade.
- Compact: Thoroughly compact the exposed soil using a plate compactor.
- Add Stabilizer: Mix the chosen stabilizer with water according to manufacturer's instructions.
Application Techniques
- Spread: Evenly spread the stabilizer mixture over the prepared surface.
- Compact: Immediately compact the mixture using a roller or plate compactor.
- Curing: Keep the stabilized surface moist for the recommended curing time (typically 24-72 hours, depending on the stabilizer).
Note: The specific requirements and best practices may vary depending on the intended use and local conditions. Always consult with a qualified professional for guidance.