Pavement Stabilisation - Process


Pavement stabilization is the process of improving the strength and durability of a pavement by adding a stabilizing material to the underlying soil or aggregatethus reducing the need for costly repairs and maintenance in the future. The process typically involves the following steps:

  • Soil Analysis:
    A soil analysis is conducted to determine the characteristics of the soil, including its composition, density, and moisture content. This analysis is used to determine the type and amount of stabilizing material needed.Portland cement is the most commonly used cement for stabilisation purposes.
  • Stabilizing Material Selection:
    The appropriate stabilizing material is selected based on the soil analysis and the desired properties of the pavement. Common stabilizing materials include cement, lime, fly ash, and asphalt emulsion.
  • Mixing:
    The stabilizing material is mixed with the soil or aggregate using a Stabiliser or other equipment. The mixing process ensures that the stabilizing material is evenly distributed throughout the soil or aggregate.
  • Compaction:
    The soil and stabilizing material mixture is initially compacted using a padfoot roller, then finished with a smooth drum roller. This compaction process improves the density and strength of the pavement and reduces the risk of settling or cracking.
  • Curing:
    The pavement is allowed to cure for a period of time to allow the stabilizing material to fully react with the soil or aggregate. The curing time varies depending on the type and amount of stabilizing material used.
  • Surface Preparation:
    Once the pavement is cured, the surface is prepared for the final pavement layer. This may involve grading, leveling, or other preparation work.