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APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
THIRD SEMESTER B.TECH DEGREE EXAMINATION, DECEMBER 2017

Course Code: CE205
Course Name: ENGINEERING GEOLOGY (CE)

Max. Marks: 100 Duration: 3 Hours
Draw figures wherever necessary
PARTA
Answer any two full questions, each carries 15 marks. Marks
1 a) Evaluate the porosity and permeability factors of intact rock and rock masses.

(3) b) Permeability alone cannot be used to judge the flow of ground water.
Discuss. (4)

c) How long does it take for water subjected to 10m head difference to pass through
a 5m length of (2.5)

1. intact granite which has an isotropic hydraulic conductivity (K) of 1 x 10 -12 m/s (2.5)
2. fractured sandstone with an isotropic hydraulic conductivity (K) of 1 x 10 + m/s

d) From the above two results of time factor of water flow, which among those rocks
(3) need care while accomplishing engineering projects affecting subsurface.

2 a) Discuss the significance of O and E horizons of soil profile. (7) b) Examine the
role of acids in chemical weathering. (8)
3 Compare the effectiveness of barriers and liners to control subsurface water in (15)
construction sites.
PART 8
Answer any two full questions, each carries 15 marks.
4 a) Chemical composition alone is insufficient to name a mineral, Discuss. (3) b) Write a

short description on any two properties that are used to identify a mineral (7) species during
field work phase.

c) Why colour and streak of minerals are not always identical? (2)

d) Quartz occur less than 10% in majority of crustal rocks. But they form more than (3)
60% of sand deposition on earth surface. Why?

5 a) Discuss (5)
i) Granite ii) Basalt

b) How do sedimentary rocks differ from metamorphic rocks? (5)

c) Discuss any two major rock species outcropped in the state of Kerala. (5) 6 a) Are the
properties (related to strength) desirable for building stones and road (7)

aggregates, similar? Evaluate.

b) Discuss the disadvantages of intensity as a measure of earthquake strength. (8)
PART ^
Answer any two full questions, each carries 20 marks.
7 a) Discuss the origin of folding and faulting of rocks (5)

b) Briefly discuss why the knowledge on rock joints is important for the construction of (5)
engineering structures.
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