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Curing times?

Hi, about the covering of the mold when curing it, should I keep it covered through the entire process (28 days)? And can I take the item off the mold once past 24 hours but keep it wrapped during the rest of the curing days (to use the mold on another item)? Thanks a lot for the class btw!


mikeasaurus12 days ago

This will depend on the piece cast. The purpose of covering the concrete is to prevent water evaporation before hydration is complete. Most times concrete can be removed from the mold after 36 hours (depending on cast thickness). After removing from mold there's no need to keep it covered, and the concrete will continue to set an increase in strength over 28 days.