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Marine Corrosion Of Mild Steel At Lumut, Perak

Sambu Potty, Narayanan and Shiou Ting, Ong and Liew, M. S. (2012) Marine Corrosion Of Mild Steel At Lumut, Perak. In: INTERNATIONAL CONFERENCE ON FUNDAMENTAL AND APPLIED SCIENCES 2012: (ICFAS2012), June 12-14, KLCC.

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Abstract

The corrosion rate of structural steels in the adverse marine and offshore environments affects the economic interest of offshore structures since the loss of steel may have significant impact on structural safety and performance. With more emphasis to maintain existing structures in service for longer time and hence to defer replacement costs, there is increasing interest in predicting corrosion rate at a given location for a given period of exposure once the protection coating or cathodic protection is lost. The immersion depth, salinity, steel composition and water pollution will be taken into account. Various corrosion allowances are prescribed for structural members by different standards. There are no studies to determine the appropriate corrosion allowance for steel structures in marine environment in Malaysia. The objectives of the research were to determine the nature and rate of corrosion in mm/year for steel structures in marine environment. It also tries to identify whether the corrosion rate is affected by differences in the chemical composition of the steels, and microalgae. Two sets of corrosion coupons of Type 3 Steel consisting of mild steel were fabricated and immersed in seawater using steel frames. The corrosion rate of the coupon in mm/ per year is estimated based on the material weight loss with time in service. The results are compared with recommendations of the code.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:marine corrosion, corrosion rate, splash zone, coupons
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Academic Subject One:Academic Department - Civil Engineering - Structures, materials and construction
Departments / MOR / COE:Research Institutes > Institute for Sustainable Building
ID Code:9822
Deposited By: DR NARAYANAN SAMBU POTTY
Deposited On:11 Jul 2013 00:08
Last Modified:19 Jan 2017 08:22

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