What is soil stabilization? Type of soil Stabilization?

SOIL STABILIZATION * Soil stabilization is a technique of increasing or maintaining stability of soil mass. * Methods of soil stabilization: 1. Mechanical stabilization: It is by suitable grading or by compaction. Mechanical stabilized construction needs retention of a certain amount of moisture. It is achieved by mixing calcium chloride and sodium chloride. 2. Cement stabilization: Depending upon the type of soil 5 to 14 per cent cement is mixed to stabilize the soil. 3. Lime stabilization: It is mainly used to stabilize subgrades of roads. In this process: (a) Clay particles get flocculated into larger size. (b) Shrinkage limit increases, Resistance to water absorption, capillary size and volume change increases. (c) Strength and durability increase. 4. Bitumen stabilization: Bitumen binds soil and reduces water absorption. Hence, it stabilizes soil. 5. Miscellaneous chemicals: Molasses, waterproofers up to 0.1 to 1 per cent help in stabilization. 6. Thermal stabilization: Heating a ...