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topic 23794

Concerns using muric acid to roughen concrete



A discussion started in 2003 & continuing through 2017

(2003)

Q. I have a smooth cement patio and I would like to make it rough due to being slippery. I was told that muric acid will do this for me? I know nothing about it. I have brick steps and vinyl siding. Can you tell me what I need to do to use this muric acid? I don't wanna harm my house nor my health... any advise you can give me will be appreciated.

Thanks,

Sherry [last name deleted for privacy by Editor]
- Indianapolis, Indiana


simultaneous (2003)

Plan B, pressure wash it with a pressure washer that will get to above 2500 psi at the tip. Adding a little bleach will speed the process up a bit. Rinse everything very well when you are thru. Yes, it will roughen the surface.

James Watts
- Navarre, Florida


(2003)

Sherry,

Go thou to thy nearest hardware store and ask them.

They should have the right acid for you AND the container should definitely say How It Should Be Used... and what precautions to take. OK?

But Muric acid doesn't exist ... you are probably thinking of Muriatic acid which is the same thing as hydrochloric acid and is used as a brick cleaner.

freeman newton portrait
Freeman Newton
White Rock, British Columbia, Canada

(It is our sad duty to
advise that Freeman passed away
April 21, 2012. R.I.P. old friend).



Soft Sand Paint Additive

Hi. Muriatic acid will etch concrete, but it's dangerous, destructive of plant life around the patio, and dangerous to get on you, in your eyes, or to breathe. Have you considered adding rubber "sand" to paint as an alternative?

Regards,

Ted Mooney, finishing.com
Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey



October 6, 2017

Q. I was trying to match the color and tone on existing stone wall with new stone which was too light. I used Thomson waterproofing and added some Mini-wax for more darker color but I got it too dark. Can I use muric acid to lighten the too-dark tone which I sprayed onto the new stonework so it comes closer to the stonework I was trying to copy?
Rich

Rich Conant
retired - Baltimore, Maryland USA



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