Cementitious materials
There’s two (2) products of supplementary cementitious material (SCM) that delivers improved workability, later-age strength, and enhances the durability properties of concrete.
Micro Silica or Silica Fume is a by product of the industrial manufacture of ferrosilicon and metallic silicon in high-temperature electric arc furnaces. It is a mineral admixture composed of very fine solid glassy spheres of silicon dioxide (SiO2). Most micro silica particles are generally 50 to 100 times finer than average cement particles. Micro Silica, also known as Silica fume is fine amorphous light gray silicon oxide powder.. Added to concrete, it changes the rheology and reacts with the cement hydration products to dramatically improve concrete strengths, durability and impermeability, allowing concrete to be used in ways never before possible.
Fly Ash or Pulverized Fuel Ash (PFA) is a by-product resulting from the burning of pulverized coal in coal-fired power stations. A small percentage of the coal forms into fine glass spheres, the lighter of which are bound by the combustion process. It is then extracted from the flue gasses by electrostatic precipitators. Fly Ash is a pozzolanic material which will not hydrate with water directly but needs lime to hydrate. In concrete, Fly Ash reacts with the lime that arises from the cement hydration to form a stable calcium silicates and calcium aluminate hydrates.
Product Summary:
Micro Silica
