How long will a concrete floor take to dry enough to build on?

[CalvinHobbes]

Poured yesterday,

How long before we can start framing it with blocks and how long before we can put pallets of blocks on it?

Weather is good. Hope it stays like that.

[JohnMo]

Builder will say tomorrow or the architect will say a week. Monday would be a good compromise 

[Conor]

Monday.

[ToughButterCup]

When a cat walks over it and you can't see the paw prints.... 

[TonyT]

4 days for non reinforced OPC ( ordinary Portland cement) slab

 

watch it doesn’t dry out to quicky with the nice weather we are having

 

watch the edges of the slab they may still be prone to damage

[Conor]

What @TonyT Says. I had to spend the first day or so spraying our slab down as it was in full sun 20c+ weather. You'll know if its drying too fast when you see white patches forming and a crumbly / flaky surface.

[Pocster]

I let a hose slowly run over mine in the daytime for at least the 1st day . You want it to cure slowly . Keep it damp 

[nod]

As soon as you can’t score it with your heel This weather you wouldn’t get it up with a pick after 24 hours