Soil Stabilization & Soil Modification
- Quality Assurance
Find a Contractor/Supplier
Uneven Distribution of Dry Modifying/Stabilizing Agent
- Apply dry agents with calibrated bulk spreader
- Ensure dry agent is evenly spread across width of spreading equipment
- Check for plugged valves/vanes on bulk spreader
Subgrade stays spongy and/or will not densify
- Reestablish control strip and/or density rolling pattern
- If steel wheel rollers are sealing the surface and causing moisture retention, use a heavy pneumatic tire roller or padfoot roller for the breakdown and compaction rolling
- If excess moisture is in the mix, revise modifying/stabilizing agent and water as necessary
- Check for deep subgrade instability
Areas of raveling, scuffing or tearing
- Sweep and monitor.
- Maintain better traffic restrictions in areas that are not cured.
- Determine if fog sealing or re-fog sealing is necessary to protect.
- Repair deep damaged areas with modified/stabilized material prior to application of pavement structure.
Permanent deformation within wheel path areas due to secondary compaction by traffic
- Keep traffic off treated material until sufficiently cured.
- After initial cure limit traffic to light vehicles
- Use motor grader to smooth surface
- Regrade prior to application of pavement structure
Permanent deformation and shoving due to unstable mix
- Investigate structure in conjunction with mix design lab. Depending on investigation, add additional modifying/stabilizing agent and rework existing areas. Remove and replace affected materials.
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