How can I remove brown muriatic acid stains from new concrete?

Question

I just had a sitting wall constructed around my new pool concrete and the workers used muriatic acid to take stucco off the concrete----the acid left a huge brown stain. The workers tried to remove the stain with a brush and clorox yesterday but the stain is only slightly better. They are supposed to return today with a pressure washer----please help!!!!!!!!

Answer 1

i agree with plumer rock yuou will have to remove the stain and add new concrete

Answer 2

The acid has probably permanently etched the concrete. I don't know of anything short of replacing it that will repair this. Sorry.