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ANNA UNIVERSITY NOTES FOR CIVIL ENGINEERING EVEN SEMESTER CE REPAIR AND REHABILITATION OF STRUCTURES 2. Structures-Lecture-Notes-Shivaram-Edition#.VTO31yGqqko. CE REPAIR AND REHABILITATION OF STRUCTURES. UNIT 1. MAINTENANCE AND REPAIR . Uploaded by.

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Discuss about the design and construction errors leading to deterioration of a structure. Salinity causes corrosion of reinforcing bars as well as deterioration of concrete. Spalling of concrete cover Cracks parallel to the reinforcement Spalling at edges Swelling of concrete Dislocation Internal cracking and reduction in area of steel reinforcement. Share with a friend. How deterioration occurs due to corrosion? Insufficient vibration may result in porous and honey combined concrete, whereas excess vibration may cause segregation.

Maintenance is the act of keeping something in good condition by checking or repairing it regularly. Construction work should be carried out as per the laid down specification. Already Have an Account? EduRev is a knowledge-sharing community that depends on everyone being able to pitch in when they know something.

CE2071 Repair And Rehabilitation Of Structures Important 16 Mark Questions

Discuss about the environment effects which leads to deterioration of concrete structure. Clayey materials in the fine aggregates weaken the mortar aggregate bond and reduce the strength. Design of concrete structures governs the performance of concrete structures.

Alkali-aggregate reaction and sulphate attack results in early deterioration. Define physical inspection of damaged structure. The beam-column joints are particularly prone to defective concrete, if detailing and placing of reinforcement is not done properly. The two facets of maintenance are i Prevention ii Repair 5. Adherence to specified water-cement ratio controls strength, permeability durability of concrete. What are the causes of deterioration? Why do I need to sign in?

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What are the possible decisions that can be made after evaluating the strength of a structure? How can we determine the cause for deterioration of concrete structure?

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Some of the use full in formation may be obtained from the physical inspection of damaged structure, like nature of distress, type of distress, extent damage and its classification etc, their causes preparing and documenting the damages, collecting the samples for laboratory testing and analysis, planning for in situ testing, special environmental effects which have not been considered at the design stage and information on the loads acting on the existing structure at the time of damage may be, obtained.

Well designed and detailed concrete structure will show less deterioration in comparison with poorly designed and detailed concrete, in the similar condition. What are the steps in repair aspect?

CE Repair and Rehabilitation of Structures Lecture Notes – Edition

What are the steps in selecting a repair procedure? What are the factors to be considered by the designer at the construction site. Inadequate concrete cover may lead to carbonation depth reaching up to the reinforcement, thus, increasing the risk of corrosion of the reinforcement. What do I get? Repair is the process of restoring something that is damaged or deteriorated or broken, to good condition.

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Rehabilitation is motes process of returning a building or an area to its previous good conditions. What are the two facets of maintenance? To stop further damages, preventive measure necessary may be planned which may warrent urgent execution. Micro-cracks present in the concrete are the sources of ingress of moistures ce20711 carbon di-oxide into the concrete which attack reinforcement and with various ingredients of concrete.

It has gotten views and also has 4. What is the effect of selecting poor quality material for construction?

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Define the fixed percentage method of evaluating the strength of existing structure. Continue with Google Continue with Facebook. Quality of materials, to be used in construction, should be ensured by means various tests as specified in the IS codes.

In aggressive environme4nt concrete structure will be severely reduces. Discuss about the quality of supervision to be followed at a site.