Structural characteristics and hydration kinetics of modified steel slag
Structural characteristics and hydration kinetics of modified steel slag
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DOI：
10.1016/j.cemconres.2010.11.018
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发表时间：
2011-03-01
影响因子：
11.4
通讯作者：
Zhang, Tongsheng
中科院分区：
文献类型：
--
作者：
Li, Jianxin;Yu, Qijun;Zhang, Tongsheng
研究了改性碱性转炉钢渣的结构特征和水化动力学.将氧气转炉钢渣（BOFS）与电弧炉钢渣（EAFS）按一定比例混合，在实验室高温下进行二次加热。采用X射线衍射、光学显微镜、扫描电镜、拉曼光谱和傅里叶变换红外光谱对BOFS和改性钢渣（MSS）的矿物学和结构特征进行了表征。结果表明，改性后MSS中阿利特含量增加，阿利特晶粒尺寸减小，形成C（6）AF（2）。与BOFS相比，MSS的热流率曲线出现了一个更明显的放热峰，与典型波特兰水泥浆体的放热峰相似。因此，其胶凝活性大大提高。(C)2010爱思唯尔有限公司版权所有。
This study investigates the structural characteristics and hydration kinetics of modified basic oxygen furnace steel slag. The basic oxygen furnace steel slag (BOFS) was mixed with electric arc furnace steel slag (EAFS) in appropriate ratios and heated again at high temperature in the laboratory. The mineralogical and structural characteristics of both BOFS and modified steel slag (MSS) were characterized by X-ray diffraction, optical microscopy, scanning electron microscopy, Raman and Fourier transform infrared spectroscopies. The results show that modification increases alite content in MSS and decreases alite crystal size with the formation of C(6)AF(2). One more obvious heat evolution peak appears in MSS's heat-flow rate curves in comparison to BOFS, becoming similar to that of typical Portland cement paste. As a result, its cementitious activity is much improved. (C) 2010 Elsevier Ltd. All rights reserved.