Unit 1 Basics of maintenance and repairs

• 1.1 Introduction 1.2 Importance of maintenance 1.3 Types of maintenance - daily
• Annually 1.4 General Maintenance - Painting of Buildings - Home Electricity System 5 10% (07 marks)

Unit 2 Causes and detection of damage

7 lecture hours

• 2.1 Causes of Damage in structures due to distress
• Dilapidation and Pests 2.2 Causes of Damage in structures due to Construction and design failures. 2.3 Inspection and evaluating damaged structure. 2.4 Condition assessment and distress-diagnostic techniques using (07 marks) Program Name: Diploma Engineering Level: Diploma Branch: Civil Engineering Subject Code: DI05006071 Subject Name: Maintenance & Rehabilitation of Structures Rebound Hammer
• ultrasonic pulse velocity test
• rebar locator
• crack detection microscope
• chloride test
• sulphate attack
• pH measurement and Half-cell potential test

Unit 3 Durability and Serviceability of Concrete

6 lecture hours

• 3.1 Quality assurance for concrete construction based on concrete properties like (a) strength (b) Permeability (c ) Thermal properties (d) cracking 3.2 Effects due to (a) climate (b) temperature (c) chemicals (d) corrosion 3.3 Design and construction errors 3.4 Effects of cover and cracks (14 marks)

Unit 4 Material and strengthening techniques for repair

11 lecture hours

• 4.1 Materials for Repair - Special concrete and mortar - concrete chemicals - construction chemicals - Expansive cement - polymer concrete - Sulphur infiltrated concrete - Ferro cement - Fiber reinforced concrete - Rust eliminators and polymers coating for rebars - foamed concrete - dry pack - vacuum concrete - asphalt sheeting 4.2 Techniques for Repairs -Gunniting
• grouting and Shotcrete - Epoxy injection (18 marks) Program Name: Diploma Engineering Level: Diploma Branch: Civil Engineering Subject Code: DI05006071 Subject Name: Maintenance & Rehabilitation of Structures -Jacketing - shoring and underpinning - Methods of corrosion protection a) corrosion inhibitors b) corrosion resistant steels c) coating and cathodic protection

Unit 5 Repair Retrofitting and Rehabilitation

10 lecture hours

• 5.1 Repair of - stone
• brick and block masonry (Cracks
• joint separation
• etc.) – Flooring - Roofs (sloping
• etc.) – Concrete members due to (i) Steel Corrosion (ii) (Lack of Bond (iii) shear
• compression failure - Rainwater Leakage in Buildings - Leakage in Basement
• toilet area 5.2 Control on Termites (White Ants) in Buildings 5.3 Fungus Decay of wood works in Buildings 5.4 Estimation of Repair and retrofitting (16 marks)

Unit 6 Demolition and Dismantling Techniques

6 lecture hours

• 6.1 Define: Demolition 6.2 Demolition techniques (a) Non-Engineering Demolition - Manual Demolition (b) Engineering Demolition - Mechanical (i) Wrecking Ball (ii) Pusher Arm technique (iii) Thermic Lance Technique (iv) Non – Explosive Demolition (v) Concrete Sawing Method (vi) Deliberate Collapse Method
• (vii) Pressure Jetting-Implosion - Deconstruction Method 6.3 Safety measures during demolition operation 6.4 Dismantling of buildings and reuse of materials/fittings from environmental and financial point of view