Granularity and Surface Structure of Ground Granulated Blast-Furnace Slags
Granularity and Surface Structure of Ground Granulated Blast-Furnace Slags
复制标题
粒化高炉矿渣粉的粒度和表面结构
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
K. Koizumi
中科院分区：
文献类型：
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作者：
N. Tsuyuki;K. Koizumi
高炉矿渣粉的水化活性随粒度的增加而提高，但其原因尚不清楚。分析了具有4680、6470和8050的布莱恩表面积的GGBS试样，但GGBS的常规反应性标准，如玻璃化程度、碱度和矿物组成，没有显示出显著差异。然而，X射线光电子能谱分析，成功地区分和识别SiO2凝胶以及玻璃相的CaO-SiO2和Al 2 O3-SiO2在炉渣表面，其中，随着Blaine表面积的增加，炉渣，CaO-SiO2型玻璃成为主导，并有助于水化的演变，确定在硅酸盐阴离子形态的三甲基硅烷化（TMS）的方法。
Ground granulated blast-furnace slags (GGBS) show improved hydration reactivity when granularity fineness increases, but the reason for the improvement in reactivity is still unknown. GGBS specimens with Blaine surface areas of 4680, 6470, and 8050 are analyzed, but the conventional reactivity criteria, such as degree of vitrification, basicity, and mineralogical composition, of the GGBS show no significant differences. X-ray photoelectron spectroscopic analysis, however, successfully distinguishes and identifies SiO2 gels as well as glassy phases of CaO-SiO2 and Al2O3-SiO2 in the slag surfaces, where, with an increase in the Blaine surface area of the slag, CaO-SiO2-type glass becomes dominant and contributes to the evolution of hydration, determined in terms of silicate anion morphology by the trimethylsilylation (TMS) method.