Woodshop Concrete Slab Question

[Tinker]

You can also spray water onto it for about a week, that helps the slab retain its moisture while it cures. I just poured a 20' X 12' slab and cured it that way. It's now been down for about a month.

Soon I will put the shed up on it.

There are curing agents (liquid spray on or brush on) that are better than water.  I don't have any names still lurking in my memory (after all, I am only 39 so have not had time to pack all that stuff into my head).  I think they can be gotten in small amounts all the way up to a tanker load.  They are good as dust barriers as well as curing agents.  You can find out more from your concrete supplier.
Tinker

 

[jeep jake]

It might not crack, concrete expands and contracts with temperature changes. I would imagine the temperature swings aren't that great by you. Look at basement floors, concrete counter tops, or any concrete that in a temperature controlled environment. I would probably cut control joints in after your done with the pour, cause depending on the jointer your finisher uses it could be a pretty wide gap.

 

[jeep jake]

What I just did for our new shop was grind down the concrete to expose the aggragate. Then we put down a hardner, and sealer