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How long does it take regular concrete to set?

I am making a concrete walkway, 2 small patios and a 3rd larger one using a concrete molds. So far, for testing, I made a few with fast setting quikrete. It works pretty good. I wait 3-5 minutes after I pour the concrete into the mold, then I'm able to remove the mold and start the next one. But the quikrete is rather expensive considering the size of the job. I was wondering if I mixed my own concrete using portland cement, sand and gravel, how long would it take the concrete to set enough so I can remove the mold (and the concrete still hold it's shape)? Again considering the size, I don't really want to wait hours in between each mold set otherwise the project could take months vice a few weekends. So it is a choice of faster and more expensive or longer and less expensive. The question is, how much longer is it really?.

Asked By: - 5/15/2012
Best Answer - Chosen by Asker
You can also purchase an additive to make your own mix fast setting, no need to change anything.
Answered By: Uncomfortably NumbtoitAll - 5/15/2012
Additional Answers (4)
get more molds and do several at once
Answered By: Mike - 5/15/2012
 
yes it will take long to dry and move around but get another mold.
Answered By: msmag - 5/15/2012
 
if you want them fast continue with fast set other wise it takes 4 hrs for normal mix to set if there sq make a bunch if you mix your own it will take 8 hrs to set concrete totally cures in 27 days
Source(s):
Answered By: William B - 5/15/2012
 
To the point answer - the regular concrete with portland cement will take 24 hours to set sufficiently to be able to remove mould i.e you should remove mould after 24 hours and put them under water for curing. Technically the initial setting time is approximately 60 to 90 min. (Indian Standard specifies 30 minutes... More
Answered By: Anil India - 5/15/2012
 
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