slagproduct

Slag product refers to any material derived from metallurgical slag after processing. It includes granulated slag (GBFS or GGBS), slag cement, slag aggregates, slag wool, and related materials. It is distinct from slag waste, though some byproducts require careful handling. Many slag products are used in construction and manufacturing, often replacing natural resources.

Slag is a byproduct of metal production. Through processes such as quenching, grinding, and metal recovery, slag products are obtained. Granulated blast-furnace slag is formed by rapid cooling of molten slag, then ground to a fine powder used as a pozzolanic additive in cement and concrete. Crushed slag can be used as coarse or fine aggregate.

Other slag products include slag wool (insulation), air-cooled slag (dense aggregate for fill and road bases), expanded slag (lightweight aggregate), and slag glass for decorative or filtration uses. Some facilities produce slag cement by intergrinding slag with Portland cement clinker.

Uses and benefits: Slag products can reduce clinker demand, improve durability, and reduce heat of hydration in concrete. They also serve in road bases, ballast, drainage media, soil stabilization, and decorative or filtration applications. Environmental benefits arise from recycling a waste stream, conserving natural resources, and diverting slag from landfills.

Standards and regulation: Slag products are governed by national and international standards that specify chemistry, fineness, and performance. Examples include ASTM C989 for ground granulated blast-furnace slag, EN 15167 for slag materials, and country-specific specifications.