2022-6-1 · Test Sand, ASTM 20-30. Supports the following standards: ASTM D968, ASTM C185, ASTM C359, ASTM C472, ASTM C778, ASTM C91, ASTM C141, ASTM C207, ASTM C311, AASHTO T132, AASHTO T137, AASHTO T185. Sand is specially graded natural silica sand to pass a No. 20 (850µ) sieve. Specific gravity is 2.65.