Silica Fume NR880 is a densified dry powder microsilica admixture for portland cement concrete and mortars. Silica Fume NR880 is a pozzolanic material that consists primarily of fine silicon dioxide particles in a non-crystalline form. Silica Fume NR880 meets the requirements of ASTM C-1240 and contains a minimum of 88% silicon dioxide (SiO2). Technical Data: Parameters Standard Value Silicon Dioxide(SiO2) min 88 % Loss on Ignition(L.O.I) @ 975 degree celsius max 3 % Moisture Content (H2O) max 2 % Percent Retained On 45micron (325 sieve) max 2 % Bulk Density 600-700kg/m3 Silica Fume CAS #: 69012-64-2  Silica Fume Packing:  900kg/jumbo bags and 25kg small plastic woven bags.  Application & Usage: 1.Newreach Silica Fume 880 is used in cement and concrete.