Aluminum pole in Concrete? 5

[seattlemike]

Do standard Aluminum structural shapes/alloys have a problem (chemical) with being embedded in concrete?

Thank you,
SeattleMike

 

[UcfSE]

The aluminum should have an asphaltic coating or some other way to electrochemically separate the two materials.

 

[seattlemike]

Hi UcfSE,

Is there a difference between "asphaltic" coating and "bituminous" coating?

 

[SlideRuleEra]

See "Nonferrous Metals In Contact With Concrete", out-of-print document from the Portland Cement Association, on this page of my website

http://www.slideruleera.net/PCA-Page.html

http://www.SlideRuleEra.net

 

[hokie66]

Not only is concrete not good for aluminum, aluminum is not good for the concrete. Concrete codes prohibit embedded aluminum.

 

[SteveWag]

Black electrical tape wrapped one layer thick with a small over-lap has been used by me for years. Also, make sure that water cannot fill the embedded post, I have had split posts and split concrete due to freezing. Years ago I had a commercial AM antenna (Lingo pole) split vertically for about 40-feet.

Steve Wagner