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spots on acid wash concrete, pre-sealed

Posted by m barnes on January 23rd, 2003 08:24 AM

I had a colored cement deck built around a new swimming pool. It was acid washed which made it extremely porous. It isn't sealed yet and the pool plasterers made a couple of stains on the concrete that don't come up easily. I would like to remove them before it is sealed as the seal will make them more obvious. I believe the stains are caused primarily from yard dirt that got on the concrete. Any ideas??

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