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.
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.
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.
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