This document discusses various techniques for soil stabilization. It is used to improve the engineering properties of soil and make it suitable for construction purposes. The main techniques discussed are mechanical stabilization using compaction, cement stabilization by mixing soil and cement, lime stabilization effective for clayey soils, bituminous stabilization using bitumen to bind soil particles, and geotextile stabilization using strong porous fabrics embedded in soil. Each technique increases properties like bearing capacity, shear strength and reduces permeability and compressibility.

1. SOIL STABILIZATION
TECHNIQUES
Submitted to : Subrat Mishra
(Head Of Civil Engineering
Department)
Submitted by : Saurabh Singh
B.Tech Civil Engineering
University Roll No. 1436000117

2. ∗ It is the process which is used to improve the engineering
properties of the soil and thus making it more stable.
∗ Soil stabilization is required when the soil available for
construction is not suitable for the intended purpose.
∗ It includes compaction, pre-consolidation, drainage and many
other process.
Soil Stabilization

3. It is used for many purposes. It increases different soil
properties as listed below:
1.Soil stabilization is used to reduce the permeability and
compressibility of the soil mass.
2.It is used to increase the bearing capacity of foundation soils.
3.It is used to increase the shear strength of soil.
4.It is used to increase the unit weight of soils.
5.It is used to improve the natural soils for the construction of
highway and airfields.
Uses of Soil Stabilization

4.  Mechanical Stabilization
 Cement Stabilization
 Lime Stabilization
 Bituminous Stabilization
 Chemical Stabilization
 Stabilization by geotextiles
 Mechanical Stabilization:
∗ In this technique mechanical energy is used (Rollers, Plate Compactors,
Tampers etc.)
∗ To improve the soil by compaction.
∗ It is the Simplest method of soil stabilization.
∗ Preferably for construction of embankment for roads, railways etc.
Types Of Stabilization:

5. Roller
Plate Compactor

6. ∗ Cement stabilization of soil is done by mixing pulverized soil
and Portland cement with water and compacting the mix to
attain a strong material.
∗ This is also known as Soil-Cement Stabilization.
 Cement Stabilization:
1. 2.

7. 3. 4.
5.

8. ∗ Lime stabilization is useful for stabilization of clayey soils
but it is not effective for sandy soils.
∗ But sandy soils can be stabilized with clay, fly ash etc.
∗ The ratio of fly ash to lime varies between 3 to 5.
 Lime Stabilization
1. 2.
3. 4.

9. 5. 6.
7.
8.

10. After LimeBefore Lime

11. ∗ If the soil lacks cohesion, the bitumen coats the soil
particles, binds them together and supplies cohesion.
∗ If bitumen binder sprayed on the dry surface, it prevent
dust and stop the entry of moisture into the road.
∗ It increases the load-bearing capacity of soil.
 Bituminous Stabilization:

12. ∗ In Geotextile stabilization, A geotextile is properly embedded
in the soil and contributes to its stability.
∗ A geotextile has high tensile strength.
∗ Geotextile are porous fabrics made of synthetic materials,
such as Polyethylene, Nylon etc.
∗ Geotextile are manufactured as woven, non-woven or grid
form.
 Stabilization by geotextiles:
Without
Geotextile
With
Geotextile

13. Geotextile in grid form

14. Thank You!