Concrete Time for Curing
Concrete Time for Curing
(OP)
We have a two week window to get the project done. We are building a 6-in. thick, 6-ft. X 6-ft. reinf concrete slab on 6-in, compacted crushed stone, to support a small condensor unit. Using 3000 psi concrete. After slab is poured, how many days before we can safely install the unit? Any steps we can take to speed up the curing process?





RE: Concrete Time for Curing
Cover the little slab with an insulated blanket to retain the heat of hydration and will be go to go within 2 days, which is less time to make cylinders, transport and test to verify the short term compressive strength (if testing is necessary).
Dick
Engineer and international traveler interested in construction techniques, problems and proper design.
RE: Concrete Time for Curing
No need to do anything extraordinary in the curing process; however, I would not use a concrete mix with constituents that tend to delay the strength gain, such as fly ash or ground, granulated blast furnace slag cement. Either will delay the strength gain.
RE: Concrete Time for Curing
RE: Concrete Time for Curing
RE: Concrete Time for Curing
Dik
RE: Concrete Time for Curing
RE: Concrete Time for Curing
Order a better performing mix from the producer and make sure you have a quality contractor doing the work. Mix designs can be easily tailored to get the results you want. You get what you pay for... don't cut costs where you shouldn't and cross your fingers.
@samer87
All concrete should be cured. Whether it's using a curing compound or some type of wet cure method. If a contractor is not educated enough to properly cure the concrete you don't want him doing the work.
RE: Concrete Time for Curing
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: Concrete Time for Curing
RE: Concrete Time for Curing
The tradtional method of curing by water takes 7~10 days. However, By using curing compound (Eg, Fosroc concure compound) you can start painting bitumen almost immediately. (3~5 hr to dry)
RE: Concrete Time for Curing
cvg is correct
RE: Concrete Time for Curing
Wherever the concrete surface will be in touch with soil. like foundation.
I'm sharing my experience here. if you have other opinion, please share.
RE: Concrete Time for Curing
There are many different curing compounds. "Fosroc Concure" itself is a brand name used for several different products, some very good if used correctly, and some useless.
RE: Concrete Time for Curing
Curing compounds are intended to hold within the concrete the moisture that is latent and present in the concrete after finishing. They add nothing other than to temporarily seal the surface of the concrete to prevent such moisture loss. The rate of strength gain will depend on the amount of latent moisture and the temperature during the curing process.