Sieve Analysis (ASTM D75, C702, C136, E11): not more than 8% by weight coarser or finer Specific Gravity (ASTM C127 and C128): >2.50 Acid Solubility (AWWA B100): Hardness (Mohs Scale): 6-8 Sphericity and Roundness (API RP56): 0.6 Sodium Soundness (ASTM C88): more...