S95 grade mineral powder is a grade of mineral powder. According to the national standard GB/T18046-2000, the mineral powder is divided into three grades: S105, S95 and S75, and the content of active calcium, silicon, aluminum and other inorganic substances is greater than 30%.
The water slag from the iron and steel plant is the raw material for the production of mineral powder used in the concrete batching plant. After adding a small amount of gypsum to the water slag and grinding it, it is the slag powder. Its specific surface area is required to be above 400, and its activity index must be above 95 (S95 grade).
Slag powder is also called slag powder, granulated blast furnace slag powder. Mineral powder produced in China is mainly used for concrete admixtures, which are produced by professional factories and are added to concrete when making concrete. Generally, some gypsum can also be added in the production of mineral powder, which is calculated as SO₃%, generally 2%. Mineral powder can be further divided into ordinary mineral powder and ultra-fine mineral powder. Distinguish by specific surface area.
Mineral powder, water-quenched blast furnace slag, high-fineness, high-activity powder obtained by drying, grinding and other processes Material.
By using granulated blast furnace slag powder, the compressive strength of concrete can be effectively improved and the cost of concrete can be reduced. At the same time, it has obvious effects on inhibiting alkali-aggregate reaction, reducing hydration heat, reducing early temperature cracks in concrete structures, improving concrete compactness, and improving impermeability and erosion resistance.