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8ST11 Structural Failures & Rehabilitation

 

Objective:

To appraise students regarding various causes due to which and the structures are distressed at an early age and in some cases are collapsed too. Keeping these causes in mind the idea is to explain them the role of an engineer at design, construction, maintenance stage of any construction project to avoid such defective, distorted or/and total collapse of structure. In short to emphasize on good engineering practices in all the areas stated above.

To appraise the students regarding Evaluation techniques used for diagnosing the distressed or/and

deteriorated structures along with various materials and systems used for repairing and rehabilitation of

such defective structures, giving due emphasis on the role of an engineer at design and construction

stage whiledealing with such structures.

 

Course Contents:

    1. Meaning of construction failure

    2. Historical references

    3. Main causes of failure: 

        Design deficiency, improper materials & poor workmanship, removal of formwork at an early stage, improper
        or total absence of competent supervision and inspection, subsidence of foundations, fire, flood,
        earthquake etc.

    4. Durability of concrete and its compatibility with other materials

    5. Professional and legal responsibility in the prevention of failures

    6. Basic defect and deterioration in concrete and masonry structures

    7. Evaluation of defective concrete structure using non-destructive method of testing

    8. Repair materials and their method of application

    9. Evaluation of repaired structure

 

The practical performed in our laboratory by our students are as under:

For Non Destructive testing (NDT):

    a. Ultrasonic Pulse Velocity

    b. Rebound Hammer

    c. Core Test

    d. Rebar locating

 

Reference Books:

  1. Lessons from failures of Concrete Structures - By Jacob Fled

  2. Construction Failure - By Jacob fled

  3. Learning from failures: deficiencies in design, construction and service- By R. N. Raikar

  4. Concrete Reinforced Concrete Deteriorations & protection edited - By V. Moskvin.

  5. Technology of building repairs- By R.N. Raikar.

  6. Proceedings of National seminar on "Lessons from failures of Structures" 17-19 Dec, 1982, Vol. I & II, organized - By Maharashtra India Chapter of American Concrete Institute.

  7. Building Failures: a guide to diagnosis, remedy & prevention - By W. H. Ransom

  8. Building Disasters & Failures - By Geoff Scott

  9. Common Defects in Buildings published - By HMSO, London.

  10.  Workshop on detailing of reinforced concrete structures organized - By the Institution of Engineers (India) Nagpur Center on 11-14 Oct, 1983.

  11. Proceedings of workshop on detailing of reinforced concrete structures Vol.I 21-22 April 1986 organized - By Institution of Engineers (India) Roorkee, Local Centre on 21-22 April 1986.

  12. Design and construction of silos and bunkers - By Sargis S. Safari on and Ernest C. Harris

  13. Proceedings of seminar on concrete admixtures and repair materials. At Ahmedabad on February 24-25 1989.

  14. Proceedings of National Seminar on concrete chemicals repair materials at Calcutta 26-27 March 1987.

  15. Guide to Repair of Concrete- By Structures Collection of articles from concrete construction magazine.

  16. Concrete Repair: Materials and Methods. - By Concrete construction magazine.

  17. The Guide book to concrete repair - By Structural preservation systems, USA

  18. International Symposium on rehabilitation of structures - By Maharashtra India Chapter of American Concrete Institute, Bombay on Dec 21-23, 1981.

  19. Concrete structures: repair, waterproofing and protection - By Philip Perkins.

  20. Concrete: Repair and Protection - By Sika Concrete Protection

  21. Guide for the protection of concrete against chemical attack by means of coatings and other corrosion resistant materials. - By ACI committee 515

  22. Repairs to fire damaged structures- By W.S. Long.

  23. Diagnosing the causes of defects or deterioration in concrete structures- By D.D. Higgins.

  24. Routine maintenance of concrete bridges- By ACI committee 545

  25. Guide for repair of concrete bridges superstructure- By ACI committee 546

  26. Guide for making a condition survey of concrete in service- By ACI committee 201

  27. Building failures: a guide to diagnosis, remedy & prevention – By Addle son Lyall.

  28. The total system for concrete repair and protection - By Sika Interpol

  29. Guide to the use of waterproofing, dam proofing, protective and decorative barrier systems for concrete- By ACI committee 515

  30. Corrosion, concrete and chlorides –SP 102.

  31. Causes, Evaluation and repair of a cracks in concrete – By ACI committee 224

  32. Concrete Durability- By Proceedings of the Katharine and Bryant Maher international symposium 1987. Two volumes

  33. Non-destructive testing of concrete- By ACI committee 228

  34. Repairs of concrete structures - Assessments methods and risks SCM 21-89

  35. Rehabilitation, renovation and preservations of concrete and masonry structures - SP-85 ACI

  36. Evaluation and repair of fire damage to concrete -SP-92 ACI

  37. Concrete repair and restoration - ACI compilation No.5

  38. In Situ/Non destructive testing of concrete - SP-82, 1984

Evaluation:

Internal 60 %

    (Class assignments/tutorials, Class attendance, Tests, Class interactions, and any laboratory work if required
    etc.)

Final 40 %

    (Exam, Jury, Term Paper etc.)