GTU Civil Engineering (Semester 8)
Repairs & Rehabilitation of Structures
December 2014
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) Explain the causes of distress in structure.
7 M
1 (b) Explain various stages of condition survey. Mention the objectives of condition survey.
7 M

2 (a) How the field and laboratory testing are useful for damage assessment of Structures?
7 M
2 (b) Enlist the Non destructive test for structures and explain the 'Ultra sonic pulse velocity test' in detail.
7 M
2 (c) What is Half cell potential test? Explain it's use with fig.
7 M

3 (a) Define durability and explain factors affecting durability of structures.
7 M
3 (b) What is corrosion? Explain mechanism by which steel corrodes in concrete.
7 M
3 (c) What are the causes of cracks in concrete? Explain in detail.
7 M
3 (d) What is sulphate attack on concrete? Enlist the methods used to control sulphate attack on concrete.
7 M

4 (a) Classify the Repair materials based on types of application.
7 M
4 (b) What is polymer impregnated concrete? Write the application of it.
7 M
Write short note on
4 (c) i) Crack sealing materials.
4 M
4 (c) ii) Micro concrete.
3 M
4 (d) What is shore? Enlist different types of shores and explain use of Dead shore with sketch.
7 M

5 (a) Define : Repair, Retrofitting, Rehabilitation, Restoration and explain crack repair Technique.
7 M
5 (b) Explain column jacketing and plate bonding with sketch.
7 M
5 (c) Describe in brief the various methods / technique of demolition.
7 M
5 (d) Explain the precautions to be taken during demolition of structure.
7 M



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