Is the material used for slurry retaining walls expansive soil? What about the price of expansive soil?
I can not say for sure whether or not it can be used for piling and pulping. Generally speaking, expansive soil belongs to clay and has the property of softening with water and certain lubrication
Expansive soil is a water swelling and shrinkage, and has a special common soil fissure and the change of strength, has resulted in the reason of water swelling properties of the expansive soil containing a certain amount of hydrophilic clay minerals caused by (such as montmorillonite, illite etc.). Bentonite usually refers to non metallic mineral montmorillonite as the main ingredient, the content of montmorillonite was more than 85%. Thus, the two concepts are different. The water swelling characteristics of the expansive soil, the free expansion rate is generally 40% to 120%, while the bentonite can reach more than 2000%.
