swelling index

This is measured by the free swelling index test.

Volatile content and swelling index are used to select coals for coke blending as well.

The simplest test to evaluate whether a coal is suitable for production of coke is the free swelling index test.

The cross sectional profile of this coke button compared to a set of standardised profiles determines the Free Swelling Index.

The magnitude of strength reduction associated with this swelling phenomenon depends on the frost susceptibility and the swelling index of the subgrade soil.

Crucible swelling index (free swelling index)

Test results show that the wetting–drying–freezing–thawing cycles caused a change in the initial microstructure that produced a decrease in the compression index and an increase in the swelling index.

During that time, the large stocks were buoyed by buying from leveraged buyout funds and the swelling index funds, pools of assets that are designed to match the performance of an index.

The results of a parametric study are also presented to show the effect of measured soil parameters (i.e., swelling index and initial void ratio) and assumed parameters (i.e., Poisson's ratio and coefficient of earth pressure at rest) on the predicted displacements.

Specifications normally include maximum size of coal particles, moisture content limits, ash content limits, volatile matter limits and calorific value, sulphur content limits and free swelling index minimum (coking coals). Normally, the coal as mined does not conform to the sales specifications.