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Slag, specifically ground granulated blast furnace slag (GGBFS), is a byproduct of the iron and steel-making process. When finely ground, it exhibits cementitious properties that can be activated by the presence of alkaline substances, typically lime from the hydration of Portland cement. The mechanism of slag’s action in concrete is pozzolanic and hydraulic. It reacts with calcium hydroxide produced during the hydration of cement to form additional calcium silicate hydrate (C-S-H), which is crucial for gaining strength, and calcium aluminate hydrates, enhancing the concrete’s durability and chemical resistance.

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Slag

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  • 发表日期：

    2025年

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摘要

Slag, specifically ground granulated blast furnace slag (GGBFS), is a byproduct of the iron and steel-making process. When finely ground, it exhibits cementitious properties that can be activated by the presence of alkaline substances, typically lime from the hydration of Portland cement. The mechanism of slag’s action in concrete is pozzolanic and hydraulic. It reacts with calcium hydroxide produced during the hydration of cement to form additional calcium silicate hydrate (C-S-H), which is crucial for gaining strength, and calcium aluminate hydrates, enhancing the concrete’s durability and chemical resistance.