Depending on concrete mix design (sizes and types of aggregates, cement content, water/cement ratio, ambient temperature and concreting conditions), a dosage of between 7 and 12 percent by weight of cement or cementitious material is recommended. For use with other range of dosage, contact ABADGARAN Technical Services Department.
NOTE: Due to water absorption of E.M.MICROSILICA, it should be used with plasticizer admixtures. Otherwise it causes cracks and reduces the efficiency of the concrete.
DIRECTION OF USE
E.M.MICROSILICA can be added to the concrete by one of the following procedures:
1- It can be mixed with other dry components of the mixture, especially cement, before addition to the mixer.
2- It can be mixed with sufficient water, and be added to the mixer in slurry form. In this case the water content of slurry should be considered as a part of mixing water.
Physical state: Powder
Min. SiO2: 85%
Max. moisture content: 3%
Bulk Density: 300kg/m³
Specific Surface: Min. 17 cm2/ g
LOI: Max. 3%
Shelf life: Unlimited, in the original package
Storage condition: should be protected from direct sunlight and moisture. Keep bag in temperature range of +10°C to +30°C
Packing: 300-450 kg big bags
Silica fume has not been classified for hazardous physicochemical properties under the Globally Harmonized System (GHS).
No classification for health and environment hazards. The dust from silica fume may cause non-specific mechanical irritation to the eyes and respiratory tract. Use an approved NIOSH dust respirator with a minimum N95 rating. It should not be swallowed and contact with skin and eyes. In case of contact with eyes, rinse immediately with plenty of water. E.M.MICROSILICA is not flammable.
For further information refer to the material safety data sheet. MSDS is available at ABADGARAN website.