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Is expanded clay aggregate a preferred aggregate for fill for below-ground cavities?

Is expanded clay aggregate a preferred aggregate for fill for below-ground cavities?

Expanded Clay Aggregate (ECA ®) is an ideal material for filling in below-ground cavities in multiple construction applications. Whether you’re excavating for a storage tank, utilities, or for any other purpose which requires you to fill a cavity with strong, lightweight material, ECA ® can be used. With a naturally porous yet water-resistant structure, this incompressible material is inexpensive to purchase and transport, making it an ideal alternative to traditional soil fill or backfilling. It resists sagging and moisture, and also has thermally-insulating properties, so it’s ideal for climates with heavy rain and extreme temperature fluctuations