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钢渣作水泥基材料掺合料的相关问题 被引量:7

Relative Problems on Steel Slag Used as Additive of Cement-based Materials
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摘要 钢渣是炼钢过程中产生的工业废渣,碱度较高的钢渣中含有较多的C3S和C2S,使其具有一定的水硬活性,可作为水泥基材料的活性掺合料,对水泥基材料的耐久性可起到调节作用。但随着钢渣碱度的提高,游离氧化钙(f CaO)的含量提高,而产生潜在的不安定性,必须对钢渣进行预处理,并通过机械或化学方法激发其活性,提高水化速度。 Steel slag is a kind of industrial waste slag produced during the process of melting steel. Steel slag with higher bacisity has potential hydraulic reactivity because of its higher content of C_3S and C_2S. Therefore, it can be used as reactive additive of cement-based materials, for improving their durability. However, the content of f-CaO in steel slag increases with the increase of its basicity, resulting in poor volume stability of cement-based materials. Consequently, steel slag needs to be pretreated to improve its hydration speed and its reactivity should be activated by mechanical or chemical methods.
出处 《机械工程材料》 CAS CSCD 北大核心 2004年第5期38-40,共3页 Materials For Mechanical Engineering
关键词 钢渣 活性 水泥基材料 耐久性 steel slag reactivity cement-based material durability
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