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Corrosion Performance of Reinforced Concrete Member along Indian Coasts: Effect of Temperature & Relative Humidity

Volume 4, Number 3, July 2008 - Paper 8  - pp. 285 -292

SATISH B. ALLAMPALLEWAR1 and A. SRIVIDYA2

1Basic Engineering Department, MAEER Pune's, Maharashtra Academy of Engineering, at Dehu Phata, Alandi (Devachi), Dist:Pune, Pin:412105, Maharashtra State, India
2Reliability Engineering Group, Department of Electrical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India

(Received on May 11, 2007)


Abstract:

Comparative effect of temperature and relative humidity data at five places along Indian coasts on corrosion initiation time of steel reinforcement in concrete members subjected to chloride ingress is investigated. Corrosion initiation time at all the  places is predicted by considering respective temperature and relative humidity data and assuming same values of all other parameters. A large variation is found in corrosion initiation time which showed necessity to consider the temperature and relative humidity data in a region. Corrosion initiation time is useful for owner, designer, or to an organization to take decision in time of priority of repairs, repair strategy, corrosion protection. Cover required for 50 years time to initiate corrosion is also determined and presented. Similar approach can be applied to design a new structure for expected time to initiate corrosion.

 

References: 07

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