My house was decorated in the 1970's and had a plaster applied around a stove to
look like bricks. I removed the stove and needed to get rid of the faux brick.
The drywall was easy because I just replaced it. I tried chiselling the plaster
off the concrete floor. After several evenings of strong arms I searched the
Internet. Lots of people recommended muriatic acid or vinegar. One chemist
recommended baking soda (sodium bicarbonate) in a water solution. I tried that
because he explained the chemical reaction with the sulfur and sodium. It
worked. I let the baking soda solution soak about a half hour and a putty knife
took it off easily. Thank you chemist.
I never had this situation, but I would not have guessed that a baking soda
and water solution would work. I would have guess something acidic.
Interesting. I am surprised that baking soda and water worked, but fro what
you wrote, I guess it did.
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