Galvanic Anodes - cost?
Galvanic Anodes - cost?
(OP)
Does anyone have a rough (or accurate) idea of what Galvanic Anodes cost (small zinc hockey pucs placed in repaired concrete - wired to the rebar as sacrificial anodes?)
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RE: Galvanic Anodes - cost?
If you are doing "cleanout" repairs where the concrete is excavated from around rebar, you'll have to provide a wire connection to the rebar, but that's not a big deal. If you are placing the rebar, you can get the discs with a center hole close to the size of your rebar, slide them over the rebar, then use a small torch to heat the zinc enough to bond to the steel.
I have not used the discs but have used magnesium anode packs buried in soil. The last time I bought one I believe it was about $30 or $40 for a 5 lb. pack, with attached lead.
Check out...
http://www.rotometals.com/product-p/zincdisc3.htm