Differentiate between micro-crack & macro-crack. Explain the mechanism of micro-cracking due to differential thermal exposure in structures.
[7 marks]Make a list of various construction and design deficiencies in structures. Explain the consequences of any two in detail.
[7 marks]Define Condition assessment of structures. Explain its objectives.
[7 marks]Define Durability of Concrete. Enlist factors affecting durability in concrete structures.
[7 marks]What are the major causes of deterioration in Concrete structures? Explain the chemical deterioration due to Alkali aggregate reaction and Carbonation of concrete.
[7 marks]Write requirements as per IS:456 for durability of concrete structures.
[7 marks]What is the importance of the field and laboratory testing for damage assessment of the Structure?
[7 marks]Mention the essential requirements of a repair material.
[7 marks]Explain briefly: (a) Foamed Concrete (b) Fiber Reinforced concrete (c) Polymer latex concrete.
[7 marks]Describe in detail the different techniques you will apply to repair or strengthen a distressed RCC slab.
[7 marks]Enlist the various demolition techniques and explain few in detail.
[7 marks]What is meant by Jacketing? Discuss repair and strengthening of columns by jacketing.
[7 marks]Write short note on Foundation Rehabilitation Methods
[7 marks]Explain the crack repair by Routing and Sealing.
[7 marks]Explain the process of corrosion in Reinforced concrete structures. Mention the methods for corrosion protection.
[7 marks]Differentiate between the following ( Any seven) 1. Repair & Rehabilitation 2. Active crack and Passive crack 3. Structural vs Non-structural crack 4. Design error & Construction error 5. Durability and Serviceability 6. Porosity & Permeability1 7. Plastic Shrinkage & Drying shrinkage 8. Jacketing & Overlaying 9. Air voids & Capillary porosity
[14 marks]