Repairs & Rehabilitation of Concrete — Summer 2022

Define (i) Repair (ii) Rehabilitation (iii) Retrofitting

Explain the process of durable concrete repair.

Explain the assessment procedure for inspection and evaluation of damaged structure.

Write short note on Shotcrete.

Explain the factors affecting permeability of concrete.

List the various tests used for assessment of concrete. Explain Ultrasonic pulse velocity test in detail.

Explain long term structural health monitoring of structures.

Explain the need of cover to concrete and also list out IS:456-2000 recommendations for cover in RCC structures.

Discuss Gunniting technique and states its applications.

List out various Non-Destructive tests used to determine strength of existing structure. Explain any one of them.

Enlist the works which are taken as building maintenance.

Discuss Epoxy as a repair material.

What is meant by jacketing? Discuss repair and strengthening of columns by jacketing.

Write a note on methodology of Rapid Visual Inspection of Structures.

Write short note on Vacuum concrete.

Discuss parameters for good repair material to be used for repair and rehabilitation works.

Write a short note on polymer concrete.

Explain the scope and objectives of Preliminary Investigation as well as Detailed Investigation

Explain mechanism of corrosion of steel embedded in concrete. Enlist methods to control corrosion of reinforcement & explain any one.

What is building maintenance? List the activities covered in building maintenance.

Discuss the Temperature effect on concrete.

Explain the “Rebound Hammer Test” with neat sketches.1

Enlist various causes of damage in Masonry buildings.

Write short not on freezing and thawing.

What is SHM? How SHM can be applied to buildings. Explain in detail.