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**GEOTECHNICAL LABORATORY EXPERIMENTS**

# How to study this subject

Subject Code : 10CVL67 IA Marks : 25

No. of Practical : 03 Exam Hours : 03

Hours/Week

Total No. of Practical Hours : 42 Exam Marks : 50

1. Identification of gravel type, sand type, silt type and clay types soils, Tests for determination of Specific gravity (for coarse and fine grained soils) and Water content (Oven drying method).

3hours

2. Grain size analysis of soil sample (sieve analysis).

3 Hours

3. In situ density by core cutter and sand replacement methods.

3 Hours

4. Consistency Limits – Liquid Limit (Casagrande and Cone Penetration Methods), plastic limit and shrinkage limit.

3 Hours

5. Standard Proctor Compaction Test and Modified Proctor Compaction Test.

3 Hours

6. Coefficient of permeability by constant head and variable head methods.

3 hours

7. Strength Tests

a. Unconfined Compression Test

3 Hours

b. Direct Shear Test

3 hours

c. Triaxial Compression Test (undrained)

3 Hours

8. Consolidation Test- Determination of compression index and coefficient of consolidation.

3 Hours

9. Laboratory vane shear test 3 hours

10. Determination of CBR value 3 hours

11. a) Demonstration of miscellaneous equipments such as Augers, Samplers, Rapid Moisture meter, Proctor’s needle.

b) Demonstration of Hydrometer Test.

c) Demonstration of Free Swell Index and Swell Pressure Test

d) Demonstration of determination of relative density of sands.

3 Hours

12. Preparing a consolidated report of index properties and strength properties of soil

3 Hours

REFERENCE BOOKS:

1. Soil Mechanics and Foundation Engg.- Punmia B.C. (2005), 16th Edition Laxmi Publications Co. , New Delhi.

2. BIS Codes of Practice: IS 2720(Part-3/Sec. 1) – 1987; IS 2720 (Part – 2)- 1973; IS 2720 (Part – 4) – 1985; IS 2720 (Part – 5) – 1985; IS 2720 (Part – 6) – 1972; IS 2720 (Part –

7) – 1980; IS 2720 (Part – 8) – 1983; IS 2720 (Part – 17) – 1986; IS 2720 (Part – 10) – 1973; IS 2720 (Part – 13) – 1986; IS2720 (Part 11) – 1971; IS2720 (Part 15) – 1986; IS 2720 (Part 30) – 1987; IS 2720 (Part 14) – 1977; IS 2720 (Part –

14) – 1983; IS 2720 (Part – 28) – 1974; IS 2720 (Part – 29) – 1966, IS 2720 (Part-60) 1965.

3. Mittal

4. Soil Testing for Engineers- Lambe T.W., Wiley Eastern Ltd., New Delhi.

5. Manual of Soil Laboratory Testing- Head K.H., (1986)- Vol. I, II, III, Princeton Press, London.

6. Engineering Properties of Soil and Their Measurements-Bowles J.E. (1988), – McGraw Hill Book Co. New York.