Calcium Chloride Stabilization

A Road Reclaiming Stabilization Application

Liquid calcium chloride injection is the simplest and most cost-effective way to add stability and strength to your recycled low-volume roadbed. Once initial pulverization and rough grading are complete, calcium is sprayed on the reclaimed surface at a rate of about ¾ of a gallon per square yard. The calcium is then mixed into the top few inches of the road using the reclaimer. Once final grading and compaction are finished, another ¼ of a gallon per square yard is applied to the surface.

Benefits of Liquid Calcium Chloride Road Injection

Benefits include:

  • reduced susceptibility to freeze-thaw effects
  • improved strength
  • facilitated compaction
  • dust control

How Liquid Calcium Chloride Adds Strength to Roads

Liquid calcium chloride (CaCI2) is used as a base-stabilizing agent for full depth reclamation in areas where the freeze thaw cycle is excessive. Its effectiveness can be attributed to its affinity for water and its freeze resistant properties. Calcium draws water from the atmosphere and the treated base remains moist which enhances the compactability of the mixture and eliminates the need for added water during compaction. The calcium chloride and thus the freeze resistant properties remain in the base. This results in lower freeze points and reduced freeze-thaw cycles and a more stable and dense base. Ultimately, calcium chloride offers greater base density, increased load bearing strength and a better surface uniformity. In full-depth reclamation, the pulverized aggregate is coated with liquid calcium chloride to bind the particles into a solid base layer.