What's in the bucket is a mix of excess water, cement, aggregate (often fine sand), and pigments. The cement could easily already be at least partially cured, and the mix of the rest of the components would be unlikely to result in the right color or texture, or likely even properly cure. The proportions would likely be way off, and it might just end up a weak slush if you tried to retrieve it from the bucket. It can be enough of a mess, so don't dump it down a drain, though! More than one person learned that lesson way too late.
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Jim DeBruycker
Not a pro, multiple Schluter Workshops (Schluterville and 2013 and 2014 at Schluter Headquarters), Mapei Training 2014, Laticrete Workshop 2014, Custom Building Products Workshop 2015, and Longtime Forum Participant.
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