underlays to concrete: blinding, poly sheet, sand
underlays to concrete: blinding, poly sheet, sand
(OP)
Hello all.
Can anyone advise the different uses of blinding concrete, polythene sheeting and sand as underlays for various concrete structures poured on ground? This is for Australian conditions.I have always used whatever standard drawings were to hand but now I find myself working for a firm with no standards and am having to reinvent the wheel.As examples of concrete structures, I am thinking of footings, slabs, walls, strip footings etc. its not so simple when you start to think of it. Thanks
Can anyone advise the different uses of blinding concrete, polythene sheeting and sand as underlays for various concrete structures poured on ground? This is for Australian conditions.I have always used whatever standard drawings were to hand but now I find myself working for a firm with no standards and am having to reinvent the wheel.As examples of concrete structures, I am thinking of footings, slabs, walls, strip footings etc. its not so simple when you start to think of it. Thanks





RE: underlays to concrete: blinding, poly sheet, sand
vapor barrier when moisture coming through the slab is undesirable
blinding is good to provide a level surface for placing reinforcement, such as on a rough rock surface
RE: underlays to concrete: blinding, poly sheet, sand
Check out NRMCA CIP 29 "Vapor Retarders Under Slabs on Grade"
"Vapor Barriers Under Concrete Slabs" by Suprenant
http://www.wagnermeters.com/getting_the_vapors.php
Hope these few references help.
RE: underlays to concrete: blinding, poly sheet, sand
RE: underlays to concrete: blinding, poly sheet, sand