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Concrete In Australia : March 2009
Table 1. Summary of data available from Australian and International standards. Standard number Standard title AS 2041 Buried corrugated metal structures Year published 1998 Information provided Average metal corrosion losses for steel and zinc in buried environments Guidance on corrosion rates of steel piles in water, refuse fi ll and soil. AS 2159 Piling – design and installation 1995 Guidance on grades of concrete suitable for water, refuse fi ll and soil exposures for a 40-60 years design life. AS 2312 Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings AS 2309 Durability of galvanised and electro-galvanised zinc coatings for the protection of steel in structural application- Atmospheric AS 4312 Atmospheric corrosivity zones in Australia DIN 4030 Assessment of water, soil and gases for their aggressiveness to concrete: Principles and limiting values. DIN 50929 Part 3 Probability of corrosion of metallic materials when subject to corrosion from the outside ISO 9223 Corrosion of metals and alloys – corrosivity of atmospheres – classification AS 3600 Concrete structures 2002 Guidance on fi rst year corrosion rates for steel in atmospheric exposures and basic information on rates of corrosion of steel in fresh water, seawater and soil. Typical corrosion rates of zinc in a various waters. 2008 Estimated service life of galvanised and electro- galvanised coating in various atmospheric corrosivity categories. 2008 Guidance on assessing the atmospheric corrosivity and provides range of corrosion rates likely in fi rst year of exposure to each of the corrosivity categories. 1991 Provides guidance and limiting values regarding the aggressiveness of natural water and soil to concrete. Provides guidance on the assessment of soil and water environments. 1985 Provides guidance on the probability that corrosion will occur on the outside of metal components in contact with soil or water 1992 Typical atmospheric corrosion rates for steel, zinc, copper and aluminium 2001 Provides guidance on the concrete class and cover requirements for a number of general environments to ensure the concrete has adequate durability for a 40-60 year design life. AS 5100.5 Bridge Design. Part 5: Concrete 2004 Provides guidance on the concrete class and cover requirements for a number of general environments to ensure the concrete has adequate durability for a 100 year design life. Concrete in Australia Vol 35 No 1 41