15CV753 Rehabilitation and Retrofitting of Structures syllabus for CV

General:

Introduction and Definition for Repair, Retrofitting, Strengthening and rehabilitation. Physical and Chemical Causes of deterioration of concrete structures, Evaluation of structural damages to the concrete structural elements due to earthquake.

Damage Assessment:

Purpose of assessment, Rapid assessment, Investigation of damage, Evaluation of surface and structural cracks, Damage assessment procedure, destructive, non-destructive and semi destructive testing systems

Influence on Serviceability and Durability:

Effects due to climate, temperature, chemicals, wear and erosion, Design and construction errors, corrosion mechanism, Effects of cover thickness and cracking, methods of corrosion protection, corrosion inhibitors, corrosion resistant steels, coatings, and cathodic protection.

Maintenance and Retrofitting Techniques:

Definitions: Maintenance, Facts of Maintenance and importance of Maintenance Need for retrofitting, retrofitting of structural members i.e., column and beams by Jacketing technique, Externally bonding(ERB) technique, near surface mounted (NSM) technique, External post- tensioning, Section enlargement and guidelines for seismic rehabilitation of existing building

Materials for Repair and Retrofitting:

Artificial fibre reinforced polymer like CFRP, GFRP, AFRP and natural fiber like Sisal and Jute. Adhesive like, Epoxy Resin, Special concretes and mortars, concrete chemicals, special elements for accelerated strength gain, Techniques for Repair: Rust eliminators and polymers coating for rebar during repair foamed concrete, mortar and dry pack, vacuum concrete, Gunite and Shot Crete Epoxy injection, Mortar repair for cracks, shoring and underpinning.

Course outcomes:

After studying this course, students will be able to:

1. Understand the cause of deterioration of concrete structures.

2. Able to assess the damage for different type of structures

3. Summarize the principles of repair and rehabilitation of structures

4. Recognize ideal material for different repair and retrofitting technique

Program Objectives: •

Engineering knowledge •

Problem analysis

•Interpretation of data

Question paper pattern: •

• The question paper will have 5 modules comprising of ten questions. Each full question carrying 16 marks •
• There will be two full questions (with a maximum of three subdivisions, if necessary) from each module.
• • Each full question shall cover the topics as a module • The students shall answer five full questions, selecting one full question from each module.
• If more than one question is answered in modules, best answer will be considered for the award of marks limiting one full question answer in each module.

Text Books:

1. Sidney, M. Johnson, “Deterioration, Maintenance and Repair of Structures”

2. Denison Campbell, Allen & Harold Roper, “Concrete Structures – Materials, Maintenance and Repair”- Longman Scientific and Technical.

Reference Books:

3. R.T.Allen and S.C. Edwards, “Repair of Concrete Structures”-Blakie and Sons Raiker R.N., “Learning for failure from Deficiencies in Design, Construction and Service”- R&D Center (SDCPL).