What is meant by quicksand condition?

QUICK SAND CONDITION IN COHESIONLESS SOILS The shear strength of cohesionless soil depends upon the effective stress. The shear strength is give by Where = effective stress. = angle of shearing resistance. The effective stress is reduced due to upward movement of flow of water. read more

Quicksand is a colloid hydrogel consisting of fine granular material (such as sand, silt or clay), and water. Quicksand forms in saturated loose sand when the sand is suddenly agitated. When water in the sand cannot escape, it creates a liquefied soil that loses strength and cannot support weight. read more

Quicksand is a condition and not a soil type. This condition is created in saturated thick layers of loose fine sandy soils when disturbed either due to vibration, such as, from pile driving in the neighborhood, or due to pressure of flowing water (at the time of heavy pumping in excavation). read more