yes, because after casting, concrete will get its 90% strength within 28 days and proper hydration require the proper amount of water for atleast 28 days.
Concrete is made from cement and added gravel. Cement starts out as a powdered rock, which will remain a powder unless water is added to it. Water turns it unto a paste which will gradually harden into a solid material. The water undergoes a chemical reaction with the cement powder.
Actually, the rotation is mainly to keep the concrete well mixed and homogeneous during transport, thereby insuring the sand, gravel, water, and cement is well mixed. The concrete itself will set up or harden at approximately the same rate of time, regardless, whether it is rotating or not. Typical concrete mixes show noticeable hardening/stiffening after approx 2 hours, depending on temperature and other factors.**Note: The correct term is concrete. Cement is actually the dry gray powder, that when hydrated with water, bonds the rock and sand together to make concrete.
all things that need to dry are based on 72 degrees concrete needs 30 days to fully cure.
it takes 28 days to fully cure, It would be advisable not to drive on it before that because of micro cracks, which will continue to migrate through time, causing spiderwebbing outside of your control joints, Depends on the cement used some quick cure cements can harden in an hour
A chemical reaction which is called hydration between the cement & water (also called 'curing') and which takes TIME mostly, it can still be hardening a hundred years later!
Concrete is made from cement and added gravel. Cement starts out as a powdered rock, which will remain a powder unless water is added to it. Water turns it unto a paste which will gradually harden into a solid material. The water undergoes a chemical reaction with the cement powder.
With a sledgehammer.
Actually, the rotation is mainly to keep the concrete well mixed and homogeneous during transport, thereby insuring the sand, gravel, water, and cement is well mixed. The concrete itself will set up or harden at approximately the same rate of time, regardless, whether it is rotating or not. Typical concrete mixes show noticeable hardening/stiffening after approx 2 hours, depending on temperature and other factors.**Note: The correct term is concrete. Cement is actually the dry gray powder, that when hydrated with water, bonds the rock and sand together to make concrete.
if you smother it in kethcup you can eat anything Actually no you cannot eat concrete. Well you should not eat concrete, the body is primarily made up of water. What is needed for concrete to harden? Water. Think about it, it would harden in your lower intestine and you would have some hard crap. Literally. Not a good idea.
Chemical reaction of lime and dehydrated gypsum with water.
Concrete is composed of water, cement and sand. It has three constituents. Concrete is mixed as a wet mixture, poured into place and allowed to harden and dry.
all things that need to dry are based on 72 degrees concrete needs 30 days to fully cure.
it takes 28 days to fully cure, It would be advisable not to drive on it before that because of micro cracks, which will continue to migrate through time, causing spiderwebbing outside of your control joints, Depends on the cement used some quick cure cements can harden in an hour
Concrete cures and hardens from chemical reactions over a specific period of time. If the concrete work is not completed within the specific period of time, the fluid concrete will harden and become unworkable.
The binder in concrete is usually cement. Cement causes the aggregate and sand to bind together mechanically and harden to make a solid surface.
No. Cement is used to hold the rocks of concrete together. Cement by itself does harden in water. but it not a very hard or durable product.
Concrete is probably the most important building material today and is used as an alternative for brick/wood since the Roman & Egyptian times. It is composed of cement,stone[gravel], sand and water which is a key ingredient that hardens the concrete. When reinforced with steel bars it is even more useful.