NPTEL Maintenance and Repair of Concrete structures1Assignment Solutions || Swayam 2022 || Madras

??This course will help students learn how to identify various deterioration mechanisms or damage mechanisms in concrete structures (say, deterioration of metallic reinforcement and cementitious materials). The course will discuss both the scientific aspects and its use while practicing repair works at site. Use of various non-destructive, partially-destructive tools to assess the condition of the structure will be discussed. Also, tips on selecting measurable parameters that are useful in deciding the further repair and maintenance practices will be provided. Following this, practices for typical near-surface repair, corrosion protection, structural strengthening, structural stabilization, etc. will be discussed in detail. At the end of the course students will be able to suggest evaluation and repair/retrofitting methods for extending the service life of concrete structures. Importance for preventive maintenance practices (instead of corrective maintenance practices) will be discussed throughout the coursework.

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??COURSE LAYOUT

Week 1 : Introduction, significance of corrosion, and corrosion mechanisms

Week 2 : Embedded metal corrosion

Week 3 : Deterioration of cementitious systems – Sulphate and Acid attack

Week 4 : Deterioration of cementitious systems – Alkali Silica Reaction (ASR), Shrinkage,

and others

Week 5 : Concrete assessment using non-destructive tests (NDT)

Week 6 : Concrete assessment and load effects

Week 7 : Surface repair – Condition assessment

Week 8 : Surface repair – Analysis, strategy, and design
Week 9 : Surface repair – Material requirement, surface preparation, placement of repair

material
Week 10 : Strengthening and stabilization – Introduction and beam shear capacity

strengthening
Week 11 : Strengthening and stabilization – Column strengthening
Week 12 : Strengthening and stabilization – Flexural strengthening

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??BOOKS AND REFERENCES

Concrete Repair and Maintenance” by Peter H. Emmons, R.S. Means Company, Kingston, MA, USA
1. “Maintenance Repair & Rehabilitation & Minor Works of Buildings” P.C. Varghese, PHI Learning Pvt. Ltd., New Delhi
2. “Concrete Repair to EN1504 – Diagnosis, Design, Principles and Practice” Michael Raupach and Till Buttner, CRC Press., Taylor and Francis Group, Boca Raton, FL, USA
3. “Concrete Structures – Protection, Repair and Rehabilitation” R. Dodge Woodson, Butterworth-Heinemann – Elsevier, UK

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