Where does the water go in concrete?

[salami1212]

Im guessing it evaporates, but then if thats the case, why does the concrete not shrink by much?

 

[asim18]

It isn't a phase transition. It's a chemical change

 

[Meridian]

It's part of a chemical reaction, and becomes part of the concrete. That's why it stops just being a powder, is my understanding.


M

 

[salami1212]

so it becomes the concrete? surely then whenever we lay concrete we are using up water which can never be replaced.. and surely then if we keep laying concrete then maybe one day there will be none left ?!

 

[Shayper]

Theoretical possibility, but I'm pretty sure we would run out of the other materials to make concrete before we run out of water

 

[Shayper]

Yes, and you also can't seem to help but be spamming that fact around tonight...


Seriously, why are you repeating that point? it's not like it's impressive or anything... I mean I have red hair but I don't go on abou... Yeah I think I'll stop there.

 

[asim18]

so it becomes the concrete? surely then whenever we lay concrete we are using up water which can never be replaced.. and surely then if we keep laying concrete then maybe one day there will be none left ?!

Yes, it becomes the concrete. The bonds between the hydrogen and oxygen atoms in the water break apart, and they form new bonds with the atoms in the cement mix.


As Shayper said. Something like 75% of Earth is covered in water, and god knows how deep it gets.

 

[MikeHunt79]

so it becomes the concrete? surely then whenever we lay concrete we are using up water which can never be replaced.. and surely then if we keep laying concrete then maybe one day there will be none left ?!

Yes. In theory we would run out of water if we keep laying concrete, but I have a feeling that we would have to lay an awful lot of concrete in order to achieve this.

If you really want to go to town, load up a speadsheet and calculate how many tons of concrete would have to be laid...

 

[sHo0sH]

From what I can gather the answer to that question would be 1.25118 × 10*23 tonnes of concrete

* being to the power of

 

[craptakular]

so it becomes the concrete? surely then whenever we lay concrete we are using up water which can never be replaced.. and surely then if we keep laying concrete then maybe one day there will be none left ?!

lol do you realise how much water there is on earth?

 

[Edrof]

** Removed **

 

[Edrof]

Fun concrete fact: the Hoover Dam, built in 1931, still hasn't fully dried yet (or 'cured' might be a better term).

 

[Energize]

so it becomes the concrete? surely then whenever we lay concrete we are using up water which can never be replaced.. and surely then if we keep laying concrete then maybe one day there will be none left ?!

OMG you're right!

 

[Jono8]

so it becomes the concrete? surely then whenever we lay concrete we are using up water which can never be replaced.. and surely then if we keep laying concrete then maybe one day there will be none left ?!

Won't someone please think of the children!!

 

[Aod]

Fun concrete fact: the Hoover Dam, built in 1931, still hasn't fully dried yet (or 'cured' might be a better term).

cured is definitely the better term, especially because concrete will cure when wet. inf act, Concrete will cure underwater

 

[Cosimo]

Won't someone please think of the children!!

Won't someone please think of the concrete.

 

[Rameses]

so it becomes the concrete? surely then whenever we lay concrete we are using up water which can never be replaced.. and surely then if we keep laying concrete then maybe one day there will be none left ?!

mind. blown.

 

[Firestar_3x]

Won't someone please think of the children!!

Pedo......

 

[MikeHunt79]

From what I can gather the answer to that question would be 1.25118 × 10*23 tonnes of concrete

* being to the power of

Damn, that's a lot of concrete...

 

[Richdog]

so it becomes the concrete? surely then whenever we lay concrete we are using up water which can never be replaced.. and surely then if we keep laying concrete then maybe one day there will be none left ?!

Other than... rainfall?