Standard Specification for
Lightweight Aggregates for Concrete Masonry Units1
This fashionable is issued beneath the fixed designation c 331; the variety right away following the designation indicates the year of
unique adoption or, within the case of revision, the yr of last revision. a number in parentheses shows the 12 months of last reapproval. a
superscript epsilon (e) suggests an editorial trade because the remaining revision or reapproval.
This standard has been accepted to be used via companies of the branch of protection.
click below to download Astm C 331 – 04 pdf free
click here to download Astm C 330 – 04 pdf free