Monitoring Techniques and Preventive Measures for Rebar Corrosion in Fly ash Concrete - A Review

Nayak, Gopinath and Shetty, Kiran Kumar and Punith, C G (2011) Monitoring Techniques and Preventive Measures for Rebar Corrosion in Fly ash Concrete - A Review. In: National Conference on Recent Developments In Civil Engineering – 2011, 13 ‐ 14 January, 2011, MIT Manipal India. (Submitted)

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Abstract

Structures are being affected by reinforcement corrosion. It is of great concern while considering the safety and serviceability of concrete structures. In this review paper, an introduction to rebar corrosion in concrete is presented, wherein the importance of corrosion, its causes and effect on service life are enumerated. In addition a review of different corrosion monitoring techniques adopted for diagnosis of rebar corrosion is also presented. Further the preventive measures to decrease reinforcement corrosion are also briefly presented using fly ash concrete. More than 88 million tonnes of fly ash is generated in India each year. Most of the fly ash is of Class F type. The percentage utilization is around 10 to 15%. To increase its percentage utilization, an extensive investigation was carried out to use it in concrete. This article presents the results of various experimental investigations dealing with concrete incorporating high volumes of Class F fly ash to resist corrosion. Based on the test results, it was concluded that Class F fly ash can be suitably used up to 50% or more cement replacement in concrete for use in precast elements and reinforced cement concrete construction. Corrosion of steel is a serious durability problem in reinforced concrete (RC) structures.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: concrete, reinforcement corrosion, accelerated corrosion techniques
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 08 Nov 2011 11:10
Last Modified: 08 Nov 2011 11:10
URI: http://eprints.manipal.edu/id/eprint/1533

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