about soil compaction and types of compaction and equipments used for soil compaction.standard and modified proctor test.

1. presented by
dasthagiri
Soil compaction

2. Table of contents
 1.compaction concept
 2.factors affecting compaction
 3.types of compaction
 4.laboratory compaction tests
 5.field compaction control
 6.conclusion

3. Compaction concept
 Increasing unit weight of soil by reducing air voids in order to make use of
ground surface for development,i.e.buildings,roads etc. by applying a load
over a small area air gets out from unsaturated soil

4. Factors affecting compaction

5. Types of compaction
 Rolling or kneading-most effective for clayey soil
 Vibrating –most effective for nonclayey soil
 Dropping a heavy weight-suitable for both type of soils

6. Moisture content

7. Soil type

8. Compactive effort
 More enery-greater compaction

9. Method of compaction

10. Soil Compaction in the Field:
1- Rammers
2- Vibratory Plates
3- Smooth Rollers
4- Rubber-Tire
5- Sheep foot Roller
6- Dynamic Compaction

11. Laboratory compaction of soil

12. Standard proctor test(light compaction
test)

13. Modified proctor test(heavy compaction
test)

14. Comparision curve

15. FIELD COMPACTION CONTROL
 The field compaction control consists of the
determination of,
1) Dry density
2) Water content
 Measured using core cutter and sand replacement method.
 The degree of compaction achieved in the measured by the
relative compaction, which defined as the ratio, expressed as a
percentage.
 Relative compaction,

16.  Measured using oven drying method.
 In the field water content determined using,
 Sand bath method
 Alcohol method(the calcium carbide method)
 The nuclear method
 Proctor needle method

17. conclusion
 Ultimately compaction is depending on the void ratio of
soil
 Compaction is a factor of practical importance is the
increase of soil strength and stability.
 Now a day in urban area land is one of the most common
problems
 In such case if soil’s engineering property is not up to the
requirement then there is no way without abandon that
project
 So in that case soil compaction can be applied as a one of
the most economic ground improvement
technique.

18. Any queries?