Research on cementitious behavior and mechanism of pozzolanic cement with coal gangue

被引：215
作者：
Li, Dongxu
Song, Xuyan
Gong, Chenchen
Pan, Zhihua
机构：
[1] Nanjing Univ Technol, Coll Mat Sci & Engn, Nanjing 210009, Peoples R China
[2] Univ Sci & Technol Suzhou, Dept Civil Engn, Suzhou 215011, Peoples R China
来源：
CEMENT AND CONCRETE RESEARCH | 2006年 / 36卷 / 09期
基金：
美国国家科学基金会;
关键词：
coal gangue; orthogonal design; scanning electron microscope; nuclear magnetic resonance; Si-O polyhedron;
D O I：
10.1016/j.cemconres.2004.11.004
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this paper, the mechanical property of coal gangue in the activatory process is studied by using the method of orthogonal experiment, and then the micromechanism of various coal gangues is determined by modem test methods such as scanning electron microscope (SEM) and nuclear magnetic resonance (NMR). The experiment can approve those results: when proper amount of gypsum and fluorite were taken as for mineralizer in the course of calcinations of added-calcium coal gangue, much micropore can appear in microstructure and it can be in more molten state; spectrum peak of Si-29 in this kind of coal gangue is not only in splitting decomposition, but also in broadening; the mechanical property of coal gangue calcined with calcium is in accordance with microstructure. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1752 / 1759
页数：8
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