JNTU Kakinada B-Tech 4-1 GROUND IMPROVEMENT TECHNIQUES R13 March 2018 Question Paper

IV B.Tech I Semester Supplementary Examinations, February/March – 2018
GROUND IMPROVEMENT TECHNIQUES (Civil Engineering)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
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PART ?A (22 Marks)1. a) Distinguish between sand drains and geodrains. [3]
b) Discuss about multistage well points. [3]
c) Mention different types of limes. [4]
d) Define soil nailing. [4]
e) What are the properties of geogrids? [4]
f) Explain about post grout test. [4]

PART ?B (3×16 = 48 Marks)2. a) Explain the importance of stone column technique. [8]
b) Explain the objectives of densification in cohesion less soils. [8]

3. a) Describe with neat sketches about dewatering by sumps and ditches. [8]
b) Explain the principle of electro-osmosis method of dewatering. [8]

4. a) Explain the stabilization of expansive soils by calcium chloride. [8]
b) Explain about the mechanical stabilization, along with its affecting factors. [8]

5. a) What are design principles of reinforced earth walls? [8]
b) Explain the stability checks of reinforced earth walls. [8]

6. a) Explain in detail the function of geotextile used as a separator. [8]
b) Explain the properties of geotextiles. [8]

7. a) What is Hydraulic fracturing? What are its uses and applications? [8]
b) Explain about stage grouting in detail. [8]

Code No: RT41016
Set No. 1
R13
1 of 1