[TowerTalk] Aluminum in concrete

[Gene Smar]

Doug:

     I'd suggest you paint the inside and outside of the concrete-encased
portion of the aluminum pole with Bitumastic or similar bituminous coating.
I can't recall the chemistry, but when we EE's designed electric substation
facilities for the local power company, we always had to protect the
aluminum conduit from the encasing concrete in this way.  (I THINK the
aluminum would have otherwise been eaten away by the alkaline cement.)

73 de
Gene Smar  AD3F

----- Original Message ----- 
From: "Doug Lefever" <k3qs at verizon.net>
To: <towertalk at contesting.com>
Sent: Monday, March 01, 2004 10:49 PM
Subject: [TowerTalk] Aluminum in concrete


> Hi,
> I'm homebrewing a foldover aluminum flagpole to hold one end of a dipole.
I
> would like to build the tilt base out of aluminum also, and anchor it in
> concrete.
>
> I'm wondering if there is any reason not to bury the aluminum in the
> concrete. We do it all the time with galvanized and raw steel (rebar), but
> do aluminum and concrete live well together?
>
> Thanks, K3QS
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