Why can't they place concrete on frozen gran A
Why can't they place concrete on frozen gran A
(OP)
We have been checking a site daily to see if the soil is still frozen in the rooms they are heating. They want to pour the floor slabs as soon as possible, but can't if the floor is still frozen. The soil is 4 - 8 inches of granular A on top of granular B fill or native, fairly clean sand. They compacted everything in the fall to meet or exceed spec (98% standard proctor).
I can't figure out a reason why placing the concrete on the well compacted, but now frozen, granular would be bad. I know why trying to pack frozen soils doesn't usually work.
I can't figure out a reason why placing the concrete on the well compacted, but now frozen, granular would be bad. I know why trying to pack frozen soils doesn't usually work.





RE: Why can't they place concrete on frozen gran A
RE: Why can't they place concrete on frozen gran A
The slab could also experience vertical movement due to frost heave or settling when the soil melts or freezes.
RE: Why can't they place concrete on frozen gran A
f-d
ípapß gordo ainÆt no madre flaca!
RE: Why can't they place concrete on frozen gran A
RE: Why can't they place concrete on frozen gran A
The OP described base and subgrade soils that might be non-frost susceptible, so there might not be vertical movement. I expect the detrimental result would at least be slow strength gain, maybe long-term low strength and durability.
RE: Why can't they place concrete on frozen gran A
Thanks for all your replies
RE: Why can't they place concrete on frozen gran A
RE: Why can't they place concrete on frozen gran A