Silica Fume in Concrete

Description Silica fume, a by-product of the ferrosilicon industry, is ahighly pozzolanic material that is used to enhance mechanicaland durability properties of concrete. It may be added directlyto concrete as an individual ingredient or in a blend of portlandcement and silica fume. ACI Committee 234 estimates thatat least 120,000 metric tons (130,000 tons) of silica […]