Capillary Break and slab THickness
Capillary Break and slab THickness
(OP)
Hi,
Some geotech consultant recommend omitting capillary break under a slab with thickness of 10 inch or greater. They still recommend using vapor barrier/retarder.
Is there any kind of publication which talk about this elimination of capillary break?
Thanks
Some geotech consultant recommend omitting capillary break under a slab with thickness of 10 inch or greater. They still recommend using vapor barrier/retarder.
Is there any kind of publication which talk about this elimination of capillary break?
Thanks





RE: Capillary Break and slab THickness
Think of a 10-inch thick concrete tank holding water...even uncoated, it isn't likely going to leak.
RE: Capillary Break and slab THickness
I would still use PEVB btw the slab and fill; I don't like to rely on free draining aggregate.
Have to minimize moisture and temperature differences btw top of slab and bot of slab. Using the PEVB, there is a bit of a tendency for the slab to 'curl' and if you are looking for a fairly flat slab, you might want to do a bit of research on this.
Dik