Concrete Countertop Curing Time


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Old 05-05-23, 07:59 PM
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Concrete Countertop Curing Time

I had this poured about 3 weeks ago, with a gray additive. And it still has white blotches. how long should it take to cure and clear up? I live in SoCal and it's been anywhere between 50 and 80 degrees. It's been unseasonably cool but I think that it should have been cured by now.

What are your thoughts?



 
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Old 05-05-23, 08:58 PM
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Regarding cure time, it depends on the mix used but typically concrete reaches about 99% of full strength in 30 days. The white spots could be permanent due to the way it was mixed and finished... or the way the bleed water evaporated... no way for me to tell from just a photo. But imperfections like that are often removed when the countertop is polished... which can be done after just just few days.... and sealing after 5-7 days.
 
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Old 05-06-23, 09:26 AM
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Got it thanks! I hope the polishing removes the blotches.
 
 

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