Lime is a very effective binder for plastic soils. Usually in clays there is a degree of pozzolanic  material which chemically reacts with calcium hydroxide to forma cementitious material.

Lime is usually used in subgrades or unsealed roads resulting in

  • Improved strength
  • Improved workability
  • Elimination of swelling
  • Improved grading
  • Greatly improved water resistance

These improved properties achieve major advantages in pavements.

Subgrades are:

  • Stronger therefore reduce the pavement thickness as stabilised material can be treated as a lower subbase layer
  • Improve water resistance of overall pavement.
  • A working platform that allows construction to proceed in wet weather

Unsealed Roads

  • Require less maintenance
  • Greatly reduced dust generation
  • Far safer driving surface especially in wet weather