whoshistory
Nov 29, 2010, 02:25 PM
After a slab is poured how long should you let it cure before putting up cement blocks
ballengerb1
Nov 29, 2010, 03:02 PM
Concrete gets hard after 1 day but is still very week. It achieves 90% of its strength in 3 weeks so the longer you wait the better off you are. Keeping it damp during curing increases strength
ma0641
Nov 30, 2010, 12:00 PM
I would wait a week. However, if the concrete was a high strength or quick set, maybe 4 days.