Why Do Expansive Clay Soils Cause Parking-Lot Heaving Across the Pikes Peak Region?
June 22, 2026
Expansive clay soil heaving in the Pikes Peak region is the upward displacement of parking-lot pavement caused by moisture-sensitive clay minerals in the subgrade that swell when wet and shrink when dry. The Pierre Shale and Dawson formations underlying much of Colorado Springs contain montmorillonite, smectite, and illite clays capable of generating forces that far
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