csa a23.1

huangyhg

csa a23.1
i just need to know the %age of air content for both moderate and severe exposure for max. agg. sie 3/4" for freezing and thwing exposure
check out our whitepaper library.
5% to 8% seems optimum for high quality limestone aggregate.
from table 4 of a23.1
for category 1:
10mm agg:  6-9%
14-20mm agg:  5-8%
28-40mm agg:  4-7%
for category 2:
10mm agg:  5-8%
14-20mm agg:  4-7%
28-40mm agg:  3-6%

dgkhan,
a please would have been nice!
point noted csd72.
thank you
you're welcome...
dik