Soil Stabilization & Soil Modification

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Cost Benefits

  • Increasing the structural capacity through soil modification/stabilization can reduce total pavement thickness and increase pavement service life
  • Using in-place soil modification/stabilization reduces trucking costs
  • Using in-place soil modification/stabilization reduces construction time compared to removal and replacement

Factors that may Impact Cost

  • Size of project
  • Traffic maintenance (closed local traffic only vs. alternate traffic patterns through the project)
  • Urban work (manholes / catch basins, intersection control add to cost) vs rural work
  • Night work (costs more for labor but less traffic disruptions)
  • Bidding/Tender date vs Completion date, number of working days
  • Raw material pricing (modifying/stabilizing agent)
  • Competitive bids (number of contractors in Region)

Decrease Cost Without Affecting Quality

  • Perform preconstruction testing and evaluation (drainage, subgrade, structure, etc)
  • Incorporate modified/stabilized layer into structural design
  • Provide mix design with bidding/tender
  • For reconstruction, provide cores to give contractor better assessment of existing material
  • Early bidding/tender closing (ideally Oct-Dec for the next year’s work)
  • Clear, constructable specifications and QC requirements
  • Fair assignment of risk