Course

Unit 1

Durability: Life expectancy of different types of buildings – influence of environmental elements such as heat, moisture, precipitation and frost on buildings- Effect of biological agents like fungus, moss, plants, trees, algae

• termite control and prevention – chemical attack and impact of pollution on building materials and components- Aspects of fire damage and assessment.

Unit 2

Building failures – causes and effects – cracks in buildings – types, classification. Investigation and condition assessment – Semi-destructive and Non destructive testing methods.

Common defects in buildings and control measures – maintenance philosophy – phases of maintenance. Materials for repair – special mortar and concretes, concrete chemicals, admixtures, special cements and high grade concrete.

Unit 3

Techniques for repair – surface repair – material selection – surface preparation – rust eliminators and polymer coatings for rebars – repair methods of cracks in concrete and masonry – epoxy injection. Guniting and shotcreting. Waterproofing methods.

Strengthening measures- flexural strengthening, beam shear capacity strengthening, column strengthening, shoring, under pinning and jacketing

Conservation of historic buildings -materials and methods – examples.

Course Objectives

To explain the mechanisms of degradation of structures

To introduce field monitoring and non-destructive evaluation of structures.

To give an exposure on the materials and techniques for strengthening or upgrading existing structural systems.

Course Outcome

CO1: Apply the knowledge of construction materials and techniques to analyze building durability problems

CO2: Evaluate the common defects and distress in construction through diagnostic procedures

CO3: Select suitable materials and methods for protection and repair.

CO4: Apply maintenance and strengthening approaches to situations

CO5: Analyze and develop report for simple maintenance and repair problems.

CO-PO Mapping

Text book(s)

Peter H. Emmons, “Concrete Repair and Maintenance”, Galgotia Publications, 2010. Vidivelli.B., “Rehabilitation of Concrete Structures”, Standard Publishers, 2009.

Reference(s)

James Douglas, Bill Ransom, “Understanding Building Failures”, Taylor & Francis Group, 2007.

Philip.H.Perkins,“Repair, Protection and Water proofing of Concrete Structures”, E & FN Spon, 1997. SP : 25 – 1984,  “Causes and prevention of cracks in buildings”, BIS

Santhakumar.A.R., “Concrete Technology”, Oxford University Press, 2018.

Sidney M. Johnson, “Deterioration, Maintenance and Repair of Structures”, Krieger Publishing Company, 1980.