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Re: Aluminum Stairs

[Subject Prev][Subject Next][Thread Prev][Thread Next] It has been a while sense I read this article but I believe the problem it
addressed is when you have aluminum in contact with steel in concrete.  This
sets up a very strong galvanic circuit.  Aluminum is much more active than
iron, its standard potential is about four times as high, and will thus
corrode very quickly.

In a message dated 8/8/01 12:22:07 PM Eastern Daylight Time,
Mark.A.Jones(--nospam--at) writes:

Oh yes.  Do not let aluminum touch concrete.  It's more than a dielectric
concern.  There will actually be an exothermic (mild) chemical reaction.

The original source for the reaction can be found in:

Monfore, G. E. and Ost, Borje, "Corrosion of Aluminum Conduit in
Concrete," Engineering News-Record, V. 172, No. 26, June 25, 1964, 6 pp.

Mark Jones
Jacobs Engineering