JNTU Kakinada B-Tech 4-2 ENGINEERING WITH GEO-SYNTHETICS R13 April 2018 Question Paper

IV B.Tech II Semester Regular/Supplementary Examinations, April – 2018
ENGINEERING WITH GEO-SYNTHETICS (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
*****

PART ?A (22 Marks)1. a) Write effect of temperature on some of the geosynthetic polymers. [3]
b) What are the benefits of using the geotextile layer or layers in the construction
of unpaved roads?
[4]
c) List the various test methods developed for measuring the size of openings in
geotextiles.
[4]
d) Why natural fibres degrade? Write a note on it. [3]
e) List the main elements or systems comprising a modern municipal solid waste
landfill.
[4]
f) Write the importance of reinforced earth walls. [4]

PART ?B (3×16 = 48 Marks)2. a) Write the types of geosynthetics and discuss their characteristics [8]
b) What are the advantages of a textured geomembrane? Where should a textured
geomembrane be used in field applications?
[8]

3. a) How are the geotextiles used in minimizing the piping phenomenon? Discuss
with clear illustrations.
[8]
b) What are the essential properties of soil to be determined for the successful use
of a geotextile in a filtration application?
[8]

4. Explain the behaviour of different subgrades with their CBR values. Also
discuss the role of geosynthetics in roads and pavements.
[16]

5. a) Describe the basic components of a geosynthetic-reinforced retaining wall. [8]
b) Provide a list of various facing elements in reinforced earth wall. Which one is
the most economical?
[8]

6. a) List the advantages of a geosynthetic filter over the graded granular filter. [8]
b) Why is it recommended to place a layer of aggregates between the geotextile
and the riprap?
[8]

7. a) What are natural geotextiles? List them. Discuss their applications of them in
various civil engineering works.
[8]
b) Write the various advantages and disadvantages of natural geotextiles. [8]

Code No: RT42012A
Set No. 1
R13
1 of 1