I've just seen some 'professionals' lay a 20m x 25m L shape, with the house the square in the missing 7x10 square in the corner and all laid as one slab?
Seems almost certain to pretty soon crack to me, there are no expansion gaps.
Slab for what? Hardstanding?
If not massively thick a stihl saw will probly be employed soon to add some 'fracture' lines to control that.
Jim K
JimK formulated the question :
Yes, hard-standing for car parking. Mmm I had not thought of a cutting it later, good point.
Or angle grinder. You don't have to go all the way through, just about half way.
/Or angle grinder. You don't have to go all the way through, just about half way/q
The op mentioned 'professionals' so I doubt they'd be titting about with extension leads and avoiding showers.....
Jim K
JimK formulated the question :
It seems not. They have been back this morning (it seems set) to clean up and no attempt to cut any expansion gaps, but I'll keep an eye on it..
Phil L used his keyboard to write :
Seems unlikely now, they have coated it with that stuff they coat surfaces with to make it impervious lol
/Harry Bloomfield Phil L used his keyboard to write :
- show quoted text - Seems unlikely now, they have coated it with that stuff they coat surfaces with to make it impervious lol /q
Er.... Paint? Tarmac?
Jim K
JimK explained on 20/11/2014 :
That clear coat stuff - Hmmm!
I reckon itll make its own
NT
I vaguely recall seeing some concrete that was laid over size, then some time later, a very large water cooled diamond grinder was used to cut expansion gaps. Can't remember where.
First thing that occurred to me is does Harry know there arent dividers just below the surface?
NT
He does know there are definitely none what so ever, which was what aroused his curiosity.
It happens that snipped-for-privacy@care2.com formulated :
The hard core was laid and levelled over the entire area, then one of those large mix on site to order trucks arrived and that was just laid over the entire massive area in one go. No dividers at all, just a single very large slab. 24 hours later, the entire surface was covered with brush on surface sealer from a large tub. I suspect the concrete might have been quite a thin layer.
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