Slag powder is the abbreviation for granulated blast furnace slag powder, which is a high-quality concrete admixture made from granulated blast furnace slag that meets the GB/T203 standard. After drying and grinding, the powder reaches a considerable fineness and meets a considerable activity index.

Physical characteristics:

Appearance: Dark gray powder

Specific surface area: usually ≥ 400m ²/kg, much larger than cement and fly ash, can significantly improve the microstructure of concrete

Particle morphology: After quenching and rapid cooling with water, a regular granular structure is formed. After grinding, the particles become finer and the filling effect is better

chemical composition

Main components: SiO ₂ (35% -38%), CaO (30% -42%), Al ₂ O ∝ (20% -35%), MgO, etc

The chemical composition is close to that of Portland cement, and it has a high potential for hydraulic hardening.