## How is a consolidation test performed?

Consolidation test consists of applying the pressure on a thin soil specimen in increments and keeping each pressure increment for sufficient time until the consolidation of the soil specimen and measurement of the vertical deformation of the soil specimen due to expulsion of pore water.

Which soil properties are measured during consolidation test?

Consolidation Test is used to determine the rate and magnitude of settlement in soils. The settlement values obtained by this test are due to primary consolidation only which is 90% of the total consolidation.

### What is the aim of consolidation test?

Consolidation test is used to determine the rate and magnitude of soil consolidation when the soil is restrained laterally and loaded axially. The Consolidation test is also referred to as Standard Oedometer test or One-dimensional compression test.

What is the difference between compaction and consolidation?

Compaction is the compression of soil by the expulsion of air from the voids of the soil. Consolidation is the compression of soil by the expulsion of water from voids of the soil. It is a quick process.

## What is CC and CR?

 The compression index, Cc , which indicates the compressibility of a normally-consolidated soil.  The recompression index, Cr , which indicates the compressibility of an over-consolidated soil.  The coefficient of consolidation, cv , which indicates the rate of compression under a load increment.

What are the consolidation parameters?

The consolidation parameters (λ, κ) are the gradients of the normal consolidation line (λ) and swelling line (κ), respectively, which can be obtained from the compression index (Cc) and swelling index (Cs), respectively, from conventional 1D consolidation tests λ = C c 2.303 , κ = C s 2.303 .

### What is consolidation pressure?

 Pre-consolidation pressure is the maximum effective vertical overburden stress that a particular soil sample has sustained in the past.  If the current vertical effective stress (σv′) is equal to or greater than σp′, the soil is said to be normally consolidated.

What is the consolidation test used for?

The consolidation properties determined from the consolidation test are used to estimate the magnitude and rate of both primary and secondary consolidation settlement of a structure or an earth fill. Estimates of this type are of key importance in the design of engineered structures and the evaluation of their performance.

## How long does the consolidation procedure last?

The consolidation procedure lasts until the excess pore water pressure is dissipated. The consolidation properties determined from the consolidation test are used to estimate the magnitude and rate of both primary and secondary consolidation settlement of a structure or an earth fill.

What is consolidation Test class 7 in geotechnical engineering?

Class 7 Consolidation Test ( Geotechnical Engineering ) Civil Engineering – Texas Tech University Consolidation – Definition  Consolidation refers to the compression or settlement that soils undergo as a response of placing loads onto the ground  These loads produce corresponding increases in the vertical effective stress,…

### What is a 1-D consolidation test?

Civil Engineering – Texas Tech University 1- D Consolidation Test  The main purpose of consolidation tests is to obtain soil data which is used in predicting the rate and amount of settlement of structures founded on clay.