This document discusses different methods of soil stabilization, including mechanical and chemical stabilization. It provides details on two primary stabilization methods - mechanical and chemical/additive. The document also lists the advantages of soil stabilization and describes the basic ingredients and process for cement stabilization of soils for pavement construction. It gives an overview of a project rehabilitating roads in Trincomalee District, Sri Lanka after the 2004 tsunami, including photos showing the road construction and stabilization process.

2. Stabilization of low quality
aggregate or soil can be done by
mechanical, chemical, electrical or
thermal.
Chemical stabilization involves
addition of cement, lime, fly-ash,
bitumen, chemical compounds etc

4. Two primary methods of soil
stabilization
•Mechanical
•Chemical or additive

5. When unsuitable construction
conditions are encountered, a
contractor has four options;
1.Find a new construction site
2.Redesign the structure so it can be
constructed on the poor soil.
3.Remove the poor soil and replace
it with good soil.
4.Improve the engineering
properties of the site soils.

6. Advantages to soil stabilization

7. Need of Stabilization

8. Basic ingredients for cemented
base/sub-base in pavement

9. Environmental Benefits of Soil
Stabilization

10. Laboratory Test Requirements

11. Advantages of Cement Stabilization

12. Mix design

13. Cement Stabilization process

14. Tsunami Affected Area Rehabilitation
Project (TAARP)- 1500 Million Grant in
Trincomalee District Funded By
ADB-EU

15. Roads Taken for rehabilitation
1.Trincomalee-Pulmoddai Road
(7.0 km - 27.00 km & 27.00-47.5km)
2. Bhogahawatte-Pulmoddai Road
(12.00 km-27.55 km).

16. Road Before Construction
Trincomalee-Pulmoddai Road
(7.0 km - 27.00 km & 27.00-47.5km)

17. Road Before Construction
Bhogahawatte-Pulmoddai Road
(12.00 km-27.55 km).

18. Pug mill

19. Pug Mill

20. Surface Preparation

21. Sub base Surface under Preparation for CSB Laying

22. Sieving the Soils collected from the Gravel Quarry

23. Spreading Stabilized Gravel

24. Leveling Stabilized Gravel

25. CSB Surface is Leveled and Compacted

26. Leveled & Compacted

27. Levels and compaction is Carried out on the Completed
CSB Surface

28. Stabilization Process
• 1.Seiving Collected Gravel from Borrow Pit
• 2.Seived Gravel is Processed to Pug-mill
• 3.Processed Gravel is sent to Stabilization
• 4.Gravel Stabilization Process
• 5.Stabilized Gravel for Road Work

29. Sand is Applied on CSB Surface to Maintain Moisture for Curing

30. Geo-Textiles Laid on CSB Surface to Maintain
Moisture for Curing

31. Primed Surface after Curing

32. Finished Cement stabilized Road after surfacing
Complete

33. THANK
YOU