Structure and Pozzolanic Activity of Calcined Coal Gangue during the Process of Mechanical Activation  

作　　者：郭伟 

机构地区：[1]Department of Material Engineering, Yancheng Institute of Technology [2]Institute of Material Science and Engineering, Nanjing University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2009年第2期326-329,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Key Laboratory Foundation of Ecological-Environment Materials (Yancheng Institute of Technology) of Jiangsu Province (XKY2006020);the Natural Science Foundation of Jiangsu Provincial Education Depart-ment(07KJB430123)

摘　　要：On the basis of analyzing coal gangue＇s chemical and mineral compositions, the structure change of coal gangue during the mechanical activation was investigated by XRD, FTIR, NMR, and the mechanical strength of the cement doped coal gangue with various specific surface area was tested. The experimental results indicate that, the lattice structure of metakaolin in coal gangue samples calcined at 700 ℃ disorganizes gradually and becomes disordered, and the lattice structure of α-quartz is distorted slightly. The pozzolanic activity of the coal gangue increases obviously with its structural disorganization.On the basis of analyzing coal gangue＇s chemical and mineral compositions, the structure change of coal gangue during the mechanical activation was investigated by XRD, FTIR, NMR, and the mechanical strength of the cement doped coal gangue with various specific surface area was tested. The experimental results indicate that, the lattice structure of metakaolin in coal gangue samples calcined at 700 ℃ disorganizes gradually and becomes disordered, and the lattice structure of α-quartz is distorted slightly. The pozzolanic activity of the coal gangue increases obviously with its structural disorganization.

关 键 词：coal gangue mechanical activation STRUCTURE NMR TETRAHEDRON 

分 类 号：TB302.3[一般工业技术—材料科学与工程]