Durham Geo Tensile Sand is used for standardizing mortar for tensile strength testing. It is specially graded to pass a #20 sieve, be retained on a #30 sieve and have a specific gravity of 2.65. It is supplied in a 50 lb (22.7 kg) bag.
ASTM C 91, C 144, C 185, C 190, C 359, C 778
|C-402||Tensile Sand, 50 lb bag (blue)|