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Uses and Applications of Soil Stabilization


There are three purposes for soil stabilization.  The first one is strength improvement.  This increases the strength of its load-bearing capacity and the purpose is for dust control.  This is done to eliminate or lighten dust, generated by operation of equipment and aircraft during dry weather or dry climates.  The third purpose is soil waterproofing, protect the natural or constructed strength of a soil by preventing the entry of surface water.

Typical uses and applications of soil stabilization include Piling mats, Embankment stability, Road construction, Car parks, Foundations for floor slabs, Highway pavement construction, Airport runways, taxiways. Applying cement to soil increases soil strength, decreases compressibility, reduces swell potential, and increases durability.

Cement-Stabilized soils are typically used as a stabilized subgrade or road base, but not a surface, except possibly for low-speed roads and parking lots primarily because the material becomes fragile and cracks under traffic loading.

Reduction cracks in the surface can be avoided if unconfined strengths are kept below 700 pounds per square inch. Curing of a soil-cement mixture is essential, at a minimum, by either regularly applying water or by sealing the surface with a fog seal or similar seal. Cement should not be applied for soils with high organic content or soils that contain sulfates.

One of the traditional ways in stabilizing is the use of cement. Usually, cement is used for the base and not the surface. Cement can be used for soil stabilization but it becomes costly.

If the soil is too sandy and there are no other options, then the use of polymers as a catalyst to increase the properties of cement is recommended.

There are three major control factors as we are working with soil-cement are as follows:

1. The proper cement content is needed.

2. Proper moisture content.

3.   Adequate compaction. 

The principles of compacting soil-cement are the same for compacting the same soils without cement treatment to maximum density and finished immediately. 

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