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English: Swelling clay
español:
: arcilla dilatable, expansivas.
English:
: Swelling Clays Fillings
español:
: Relleno de Arcillas Expansivas.
English: swelling soil. Soils that contain clay minerals which absorb water and as a result swell causing bumps across terrain. The most common mineral that causes swelling soil is Smectite (montmorillonite).