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Soil consolidation refers to the mechanical process by which soil changes volume gradually in response to a change in pressure. This happens because soil is a three-phase material, comprising soil grains and pore fluid, usually groundwater [ clarification needed ] .
Consolidation is a process by which soils decrease in volume. It occurs when stress is applied to a soil that causes the soil particles to pack together more tightly ...
A soil is called overconsolidated if the current effective stress acting on the soil is less than the historical maximum. The preconsolidation pressure can help determine the largest overburden pressure that can be exerted on a soil without irrecoverable volume change.
Terzaghi's principle applies well to porous materials whose solid constituents are incompressible - soil, for example, is composed of grains of incompressible silica so that the volume change in soil during consolidation is due solely to the rearrangement of these constituents with respect to one another.
Normally consolidated soil goes to critical state along the stress path on Roscoe surface. Critical state soil mechanics is the area of soil mechanics that encompasses the conceptual models representing the mechanical behavior of saturated remoulded soils based on the critical state concept.
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In geology, consolidation is used in several senses: Lithification, the overall process of conversion of loose sediments to solid rock. [1] [2]Any other process in which loose or fluid material becomes solid rock, such as solidification of magma.