ASTM C128-12 categorizes results based on the moisture state of the aggregate: Measurement of Water Absorption of Recycled Aggregate - PMC
ASTM C128-12 outlines three test methods: astm c128 12
is the standard test method used to determine the density, relative density (specific gravity), and absorption of fine aggregate (sand) passing the No. 4 (4.75-mm) sieve. ASTM C128-12 categorizes results based on the moisture
$$G_sb,SSD = \fracSB - C$$