Assertion: mortar's sand | /r/CapableOf | conform to astm c
Facets:
value: to assure freedom
type: PURPOSE
value: to assure proper gradation
type: PURPOSE
value: for repointing
type: PURPOSE
value: generally
type: DEGREE
Source sentences:
text: For repointing, sand generally should conform to ASTM C 144 to assure proper gradation and freedom from impurities; some variation may be necessary to match the original size and gradation.