Concrete soup spilled on driveway


A couple of years ago after a small hand-mixed concrete project some of the "soup" from the clean-up was spilled on the driveway and never cleaned up. Now I would like to know the best way to approach this. Would a pressure washer work (that would be easiest), a sand blaster (more money and work) or ???
Any suggestions will be appreciated.
Bob
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Depends how much of a coating there is. If it's just cosmetic, muriatic acid solution should remove it. Doubt a pressure washer will work, but you could try. A sand blaster would probably be my choice for a thicker coating.
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If it's chunky you should chip it off with a claw hammer or something like that and clean up the rest with a wire brush. If you use acid it will for surely leave a very noticeable blotch or white spot where you use it. peace

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Most tool rental places have various sizes of concrete grinders and polishers. The results will be far less obnoxious than acid treating or hackinf at it. HTH
Joe
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i am thinking that it is a small spot maybe 6" to 1' in dia. You can use a grinder but be very careful not to grind into the original concrete . peace
wrote:

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Thanks all for the advice.
It's acutally a pretty large area --maybe 80 sq feet.
Bob
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