Roads: Base Stabilization

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Road base stabilization, also known as gravel stabilization, is a process that rehabilitates and extends the life of unpaved roads by mixing aggregate with calcium chloride to enhance road base strength and resistance to deterioration caused by traffic and weather. Road base stabilization may be used to prepare a road base for paving to help ensure the quality, resilience, and longevity of the paved surface.

Calcium chloride attracts and retains moisture from the air to hold fines and larger gravel particles together to facilitate compaction and contribute strength and stability to the road base. The cohesive power of calcium chloride helps prevent base failures, increases the road’s load bearing capacity, and minimizes the effect of freeze-thaw cycles and resulting frost heaves.