Rust Removal with Phosphoric Acid – Rebar and Welded Wire Mesh
Edit: added pictures
Hi. I am in zone 4a and building a 28×80 post frame shop with concrete slab.
Is it ok to use Phosphoric Acid to remove rust from Welded Wire Mesh and Rebar?
My WWM and #4 rebar have sat in the weather for several months and there is a mild but complete layer of rust on WWM and spot locations on Rebar.
I have used Phosphoric Acid for rust removal many times on steel material with great success. So, I know it would be a piece of cake to use a garden sprayer to coat the reinforcement material and have zero rust a day later. However, since this will be in my concrete slab, I did not know if this will result in some bad outcome on concrete reinforcement.
Note: the WWM will be used in the foot traffic area of shop and the #4 rebar will be used in equipment and vehicle traffic areas. `
This may be outside the scope of knowledge here, but I thought I would ask in case anyone knew. I have searched the topic online and it is surprising to me that no one has ever thought the same thing.
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