Rehabilitation and Retrofitting of Structures (2732004)

Unit-1:  Topic-1

Durability of concrete: Factors affecting durability of concrete, Corrosion of reinforcements in concrete, Carbonation, Chloride ingress, Alkali-silica reaction, Freeze-thaw effects, Chemical attack, Abrasion, erosion and cavitation, Weathering and efflorescence

Unit-2:  Topic-2

Defects and deterioration in buildings, Survey and assessment of structural conditions in RCC structures. Damage/condition assessment and various methods (for quantification) for its evaluation, Rapid Visual Screening (RVS) and ways to do RVS of damaged/deteriorated structures, Overview of health monitoring techniques.

Unit-3:  Topic-3

Non-destructive testing of concrete quality, Non-destructive testing of connections in steel, Corrosion assessment in reinforcements in RCC elements and components in steel structures; Design principles, techniques and working mechanism various instruments used for NDT evaluations (for strength, durability etc.) like Rebound Hammer, UPV, impact echo etc.; Technology used in various advanced instruments like Imaging techniques, GPR, Thermography, Tomography etc.

Unit-4:  Topic-4

Materials for repairs, rehabilitation and retrofitting processes, Methods for repairs, rehabilitation and retrofitting including surface preparation, Study of failures of buildings and lesson learnt, Role of quality control in construction as Preventive measures Maintenance of buildings.

Unit-5:  Topic-5

Strengthening of Earthquake-damaged buildings; Introduction to Push-over analysis.

After learning the course the students should be able to:

1. Detect defects and deterioration in buildings.
2. Survey and assess structural conditions in R.C.C. structures.
3. Understand and apply rehabilitation and retrofitting process.
4. Understand non-destructuve testing and interpretation of the results for concrete and steel structures.