SPPU Civil Engineering (Semester 4)
Concrete Technology
December 2016
Total marks: --
Total time: --
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

Solve any one question fromQ.1(a,b) and Q.2(a,b)
1(a) What are the minor compounds in Portland Cement? What is their role?
6 M
1(b) Explain in detail importance of compaction of concrete. What are the different methods of compaction?
6 M

2(a) What is bulking of sand and its effect on batching?
6 M
2(b) Write a short note on shrinkage and its different types.
6 M

Solve any one question fromQ3(a,b) and Q.4(a,b)
3(a) State the various types of destructive tests carried on hardend concrete. Explain " Flexural Test'.
6 M
3(b) Write short notes on:
i) Under water concreting
ii) Cold weather concreting.
6 M

4(a) Write short note on:
i) High density concrete
ii) Self compcating concrete.
6 M
4(b) Defien Ferrocement. What are the properties and specifications of ferrocement materials used in the construction industry.
6 M

Solve any one question fromQ5(a,b) and Q.6(a,b,c)
5(a) What do you mean by nominal mix standard mix and design mix?
6 M
5(b) Briefly outline the IS code method of concrete mix design. Write the procedure of standard mixes.
7 M

6(a) Write major factors affecting mix design. Explain water-cement ratio.
4 M
6(b) What do you mean by:
i) Mean strength
ii) Variance
iii) Standard Deviation
iv) Coefficient of variation.
4 M
6(c) Explain the DOE method of mix design in brief.
5 M

Solve any one question fromQ.7(a,b) and Q.8(a,b)
7(a) What are the factors contributing cracks in the concrete?
5 M
7(b) What is durability? What is significance of durability? What efffect of w/c ratio makes on durability?
8 M

8(a) Write a short note on "Retrofitting by FRP".
5 M
8(b) What is effect of permability on concrete? What measures should be taken to reduce permeability of concrete?
8 M

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