Teräslasijauhetta

Teräslasijauhetta, also known as steel slag powder, is a byproduct generated during the steel manufacturing process. It is a fine granular material derived from the slag that forms on the surface of molten steel. This slag is typically composed of iron oxides, calcium oxides, silica, and various other minerals, depending on the specific steelmaking techniques employed.

The physical and chemical properties of teräslasijauhetta can vary significantly, influencing its potential applications. Its fineness, hardness, and pozzolanic activity are key characteristics. Pozzolanic materials are siliceous and aluminous substances which, in a finely divided form and in the presence of moisture, react chemically with calcium hydroxide at ordinary temperatures to form compounds possessing cementitious properties.

Historically, steel slag was often considered waste. However, advancements in material science and environmental regulations have led to increased efforts to utilize this material. Teräslasijauhetta finds applications primarily in the construction industry. It is commonly used as a supplementary cementitious material in concrete mixtures, where it can partially replace Portland cement. This substitution can improve the durability and strength of concrete, as well as reduce the environmental impact associated with cement production. Additionally, it can be used as an aggregate in road construction and as a component in asphalt. Research is ongoing to explore other potential uses for teräslasijauhetta.