Chemical reaction of lime and dehydrated gypsum with water.
The binder in concrete is usually cement. Cement causes the aggregate and sand to bind together mechanically and harden to make a solid surface.
With a sledgehammer.
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.
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.
it causes it to harden.
all things that need to dry are based on 72 degrees concrete needs 30 days to fully cure.
the limestone harden because theirs another layers of limestone on top of it which pushes the bottom layer and flatten it.
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.
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.
its the calcum salts that build up soft tissue and causes it to harden
Spending too much time on your knees
Keratin... it's a natural substance that makes the nail harden.