Silica fume is a byproduct of silicon metal or ferrosilicon alloys which when mixed in concrete, improved its strength and durability. The concrete containing silica fume can have very high strength and can be very durable. Silica fume consists primarily of amorphous silicon dioxide (SiO2). The individual particles are extremely small, approximately 1/100th the size of an average cement particle. Because of its fine particles, large surface area, and the high SiO2 content, silica fume is a very reactive pozzolana when used in concrete.
Rockfit processes finest amorphous SiO2 and also has exclusive contracts with their global partners to control raw material to ensure supply of silica fume as per the required specification and schedule of their customers. The company’s silica fume quality is specified by ASTM C1240 and IS 15388:2003 standards.
Besides, improved mechanical properties of Silica Fume concrete like high compressive strength, modulus of elasticity or flexural strength is helpful in the construction of high-rise buildings. As the concrete strength increases, the column size reduces which simplifies the reinforcing steel used in the columns and provides more floor space is available for the owner.
It is recommended by ROCKFIT Corporation to use the ROCKFIT Silica Fume at an addition upto 20% by weight of cement depending on the application. The exact amount for strength or durability requirements should be determined on case to case basis by conducting trials for the specific projects. It should never be used as cement replacement agent but as an additive for high performance concrete.
The company suggested to store the silica fume under dry and well ventilated covered areas and to kept out of reach of direct sunlight and extreme temperatures. Its shelf life is 6 months if kept in dry condition. The company supplies the silica fume in 25kg HDPE laminated bags for convenient handling use.
With the excellent quality and service, Rockfit Corporation has sincerely established strategic partnership with their customers and promises to deliver the consistent quality products at competitive price, and also ensures prompt delivery.