Drilled pier air entrainment
Drilled pier air entrainment
(OP)
Is air entrainment normally used for drilled piers? Our specs on a project I have taken over have no air entrainment required but the piers will be exposed to mild freeze-thaw. Is it normally assumed the placement process for drilled piers will provide some minimal air entrainment itself?





RE: Drilled pier air entrainment
If you have freeze-thaw exposure I'd certainly consider it. I wouldn't count on natural air (usually 2 to 3%).
You could provide an option to allow the contractor to only use air in the top "x" feet of the pier but that adds all sorts of coordination challenges and adds to the possibility of missing air in some piers.
RE: Drilled pier air entrainment
RE: Drilled pier air entrainment
I have told them they can use it in the first 18" only and they don't know yet how that will be handled (as JAE mentioned above it would be a problem). I see now that I should have dropped all the top of piers to below frost level.
RE: Drilled pier air entrainment