The 20-30 Standard Sand 50lb Bag is manufactured to pass No.20 (850 micrometer) sieve and be retained on No.30 (600 micrometer). Meets ASTM C 778 and AASHTO T 132 requirements. This sand also met former ASTM C 190, now a discontinued standard.
This specially graded sand for ASTM tests are naturally rounded silica sands of nearly pure quartz, mined from the Ottawa, Illinois area.
Meets Test Methods:
AASHTO T 132
ASTM C 778