Anna University Question Paper Code : 83325
M.E. DEGREE EXAMINATION, JANUARY 2014.
Elective - 2nd Semester
Structural Engineering
ST 7002 — MAINTENANCE AND REHABILITATION OF STRUCTURES
(Regulation 2013)
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PART A — (10 x 2 = 20 marks)
1. Mention any two factors contributing to durability of concrete.
2. How will you differentiate active and dormant cracks?
3. What will happen to concrete if exposed to sulphates?
4. Name at least four instruments which are used for building diagnosis.
5. Explain 'rising dampness'.
6. Suggest suitable materials for DPC.
7. Mention any two possible reasons for spalling of cover concrete.
8. Under what circumstances stones will discolour?
9. What are the demerits of plating technique used in strengthening RC elements?
10. How to ensure bonding between a new layer of concrete over the existing old concrete?
PART B — (5 x 16 = 80 marks)
11. (a) Explain the process of wearing and erosion damages in concrete. Suggest suitable technique (i) To control the above two damages and
(ii) To restore concretes-subjected to the above two damages.
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