Separate samples are then weighed out for mortar briquettes, for soundness pats, and for the specific-gravity and fineness tests.
The charge should be continued until five consecutive, specific-gravity readings are practically the same.
specific gravity n.
Abbr. sg, sp gr
The ratio of the mass of a solid or liquid to the mass of an equal volume of distilled water at 4°C (39°F) or of a gas to an equal volume of air or hydrogen under prescribed conditions of temperature and pressure.