Anchor Bolts for Aluminum
Anchor Bolts for Aluminum
(OP)
I've got a project where Aluminum columns (and base plates) are being anchored to a concrete pier/footing. The contractor used your everyday common steel threaded anchor rods. In less than two weeks they are completely rusted over. The contract documents called for hot-dipped galvanized anchor bolts. (before judging, we did not provide the design or specifications, simply consulting on a separate portion of the larger project)
I'm thinking of having the contractor cut off and drill-in epoxy grout anchors.
Will the galvanized anchor bolts react to the aluminum? Should I use aluminum anchor bolts? If alum, what affect would the anchors have in steel reinforced concrete?
Thank you,
MLM
I'm thinking of having the contractor cut off and drill-in epoxy grout anchors.
Will the galvanized anchor bolts react to the aluminum? Should I use aluminum anchor bolts? If alum, what affect would the anchors have in steel reinforced concrete?
Thank you,
MLM





RE: Anchor Bolts for Aluminum
As an extra precaution the contact areas could be painted with insulating paint.
http://www.welding-advisers.com/
RE: Anchor Bolts for Aluminum
RE: Anchor Bolts for Aluminum
RE: Anchor Bolts for Aluminum
MLM
RE: Anchor Bolts for Aluminum
Aluminum embedded in and in direct contact with concrete is not acceptable. A chemical reaction occurs and the concrete literally self destructs from the expansion (product of the reaction, just like rust on carbon steel that is allowed to corrode in concrete). I don't know about epoxy grouted aluminum in concrete but I've seen slabs with aluminum cast into it break themselves apart.
RE: Anchor Bolts for Aluminum
RE: Anchor Bolts for Aluminum
MLM
Also, thanks for the input.
RE: Anchor Bolts for Aluminum
RE: Anchor Bolts for Aluminum
being inserted in aluminum bodies. Usual anodizing or conversion coating are not protective enough at the contact place.
http://www.welding-advisers.com/
RE: Anchor Bolts for Aluminum