Application Procedures for Paving Curing Compounds

Application procedures for curing compounds products include, but are not limited

  • Water-based curing compounds should be thoroughly agitated prior to application. Do not mix with a high speed mixer.
  • Most curing compounds will have to be removed prior to applying a sealer (acrylic, urethane, etc.), hardener (sodium silicate type), water repellent (siloxane or silane type) or any other secondary coating or topping.
  • The rate of dissipation for hydrocarbon resin-based curing compounds is dependant upon climatic conditions, the rate of application, and exposure to ultra-violet light. Under normal conditions, chemical and physical breakdown will start in 4-6 weeks.
  • typically, light abrasion along with low pressure water blasting is sufficient in cleaning resin curing compound residue.

What is ASTM C-309?

  • ASTM C-309 Standard specification.
  • Type 1, clear or translucent, without dye.
  • Type 1-D, clear or translucent, with fugitive dye.
  • Type 2, White Pigment.
  • Class A – no restriction on vehicle solids in the curing compound.
  • Class B – vehicle solids restricted to all resin material.
  • Water Retention: The liquid membrane-forming compound, when tested in accordance with ASTM C-156, shall restrict the loss of water to no more than 0.55 kg/m2 (95% of reactive moisture retained) of surface in 72 hours.
  • Drying Time: The liquid membrane-forming compound shall be dry to the touch in no more than 4 hours.
  • Coverage: 200 square feet per gallon.
  • Exclusion: Sodium Silicate based curing compounds are excluded.



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