The soil stabilised with cement (Portland cement) is usually known as soil cement.

Example of modification of soil property with the help of admixtures is: mechanical stabilization, stabilization with cement, lime, bitumen and chemicals etc.

Mechanical stabilisation involves two operations: i) changing the composition of soil by addition or removal of certain constituents, and ii) densification or compaction.

Compaction has a great effect on soil properties, such as strength and stress-strain characteristics, permeability, compression, swelling, and water absorption.

The important factors affecting the soil cement are: nature of soil, cement content, condition s of mixing, compaction and curing and admixtures.

Method of stabilisation may be grouped under two main categories: i) modification of soil property of existing soil without any admixture ii) modification of soil property with the help of admixtures.

The particle size distribution and composition are the important factors governing the engineering behavior of soil.

The properties of soil under compaction depend upon the water content, amount of compaction, and the type of compaction.

The most common application of stabilisation is in the construction of roads and air-field pavements.

For bases, liquid limit should not exceed 25 % and plasticity index must not exceed 6.