Question Paper: Concrete Technology Question Paper - December 2014 - Civil Engineering (Semester 4) - Visveswaraya Technological University (VTU)
0

Concrete Technology - December 2014

VTU Civil Engineering (Semester 4)

Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary
1 (a) Discuss briefly the ingredients of Portland cement along with their functions. 10 marks

1 (b) What are Bouge's compounds? Explain their role in setting and hardening process of cement. 10 marks

2 (a) Describe briefly fineness modulus of sand and how it is determined in the laboratory. 10 marks

2 (b) List various tests conducted on coarse aggregate and explain any two of them. 10 marks

3 (a) What are the ingredients of cement concrete? Explain their functions. 10 marks

3 (b) List and explain the factors that affect the workability of concrete. 10 marks

4 (a) Explain different types of curing of concrete. 10 marks

4 (b) What are chemical admixtures? List the admixtures used in concrete. 10 marks

5 (a) Explain the factors affecting the strength of hardened concrete. 10 marks

5 (b) Explain
(i) Aggregate cement bond strength
(ii) Flexural strength of concrete.
10 marks

6 (a) Explain the factors affecting the modulus of elasticity of concrete and relation between modulus of elasticity and strength. 10 marks

6 (b) Explain creep and shrinkage of concrete. 10 marks

7 (a) List and explain the factors affecting durability of concrete. 10 marks

7 (b) Explain chloride attack on concrete and its effect on durability of concrete. 10 marks

8 Design the concrete mix as per IS code pocedure for the following data:
a) Characteristic compressive strength at 28 day 25 MPa
b) Maximum size of aggregate: 20 mm
c) Degree of workability compaction factor 0.8 (CF)
d) Degree of quality control-Good
e) Types of exposure - Mild
f) Sp. Gravity of cement - 3.15
    Sp. Gravity of C.A.-2.72
    Sp. Gravity of F.A. - 2.60
    Sand-Zone-III
Assume any other data suitably.
10 marks

ADD COMMENTlink
written 5 months ago by gravatar for vatsalmehta922 vatsalmehta9220
Please log in to add an answer.