Acid Exposed Concrete
Acid Exposed Concrete
(OP)
Have this concrete that is already exposed to acid. You can tell that matrix holding the aggregates is partially gone and you can see the aggregate. I don't want to demo this concrete and I wanted to save it and overlay it with good sound concrete that is resistant to acid and base with PH level from 0 to 14. Is there anyway that I can neutralize the acid that was already in the concrete? We are planning to wash the concrete with caustic (soda ash before we place the new concrete. Is this enough?





RE: Acid Exposed Concrete
I would removed the upper 1/4 ot 1/2 inch of remaining concrete surface using a scabbling device or a grit blasting device (Blastrac or similar). Once this is done, you can then place a topping on the floor.
If you want to neutralize with caustic soda you may do so, but do that before you removed the additional surfacing.
RE: Acid Exposed Concrete
Just need an opportunity to use it (with attribution, of course).
Dik
RE: Acid Exposed Concrete
If rebar is present it should be encased in concrete that will protect it from corrosion. I would neutralise the prepared surface as you plan.
RE: Acid Exposed Concrete