炼钢 ›› 2016, Vol. 32 ›› Issue (1): 74-78.
• 炼钢副产品及综合利用 • 上一篇
付卫华1,王长龙2,郑永超3,刘世昌4,杨建4
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摘要： 用活性测试、化学结合水量、力学测试、X 射线衍射分析（XRD）等方法研究了钢渣的水化特性。结果表明：钢渣早期活性低，替代一部分水泥后，水泥早期水化程度降低，对水泥的早期水化产生抑制，且随着掺量增加，抑制作用加强；低水胶比时，掺入钢渣的混凝土早期强度发展缓慢，随着龄期的延长，对混凝土强度产生的不利影响相对减弱；钢渣硬化浆体中的矿物相主要有水化产物氢氧化钙、C-S-H凝胶，惰性组分铁酸二钙、磁铁矿、RO相，和未完全发生水化的胶凝组分硅酸三钙、硅酸二钙、硅铝酸二钙和七铝酸十二钙。
关键词: 钢渣, 水化特性, 混凝土, 水化产物
Abstract: The hydration of converter steel slag was investigated by the activity test, the amount of chemically combined water, the mechanical test and X-ray diffraction analysis (XRD). The results showed that steel slag had a low activity at early ages. When partly replacing the cement in concrete, the degree of hydration cement decreased at early ages and then the hydration process of cement inhibited. The bigger the proportion of steel slag is, the greater inhibition effect is. With a low water binder ratio, the concrete blended with steel slag had a slow development of strength at early ages, and the inhibition effect of steel slag on the concrete strength was weakened as the curing time increased. The main mineral phases of hardened slurry blended with steel slag include Ca(OH)2, C-S-H gel, inert components (C2F, Fe3O4，RO phase), and incomplete hydrated gelling components (C2S, C3S, Ca2Al2Si3O12 and C12A7).
Key words: steel slag, hydration characteristics, concrete, hydration product
付卫华 王长龙 郑永超 刘世昌 杨建. 转炉钢渣的水化特性研究[J]. 炼钢, 2016, 32(1): 74-78.
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