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Journal of Zhejiang University SCIENCE A 2009 Vol.10 No.9 P.1334~1340

http://doi.org/10.1631/jzus.A0920237


Correlation between 29Si polymerization and cementitious activity of coal gangue


Author(s):  Ji-xiu ZHANG, Heng-hu SUN, Yin-ming SUN, Na ZHANG

Affiliation(s):  Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

Corresponding email(s):   zhangjixiu06@mails.tsinghua.edu.cn

Key Words:  Degree of polymerization, Relative bridging oxygen number (RBO), Nuclear magnetic resonance (NMR), Coal gangue, Cementitious activity


Ji-xiu ZHANG, Heng-hu SUN, Yin-ming SUN, Na ZHANG. Correlation between 29Si polymerization and cementitious activity of coal gangue[J]. Journal of Zhejiang University Science A, 2009, 10(9): 1334~1340.

@article{title="Correlation between 29Si polymerization and cementitious activity of coal gangue",
author="Ji-xiu ZHANG, Heng-hu SUN, Yin-ming SUN, Na ZHANG",
journal="Journal of Zhejiang University Science A",
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pages="1334~1340",
year="2009",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A0920237"
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%T Correlation between 29Si polymerization and cementitious activity of coal gangue
%A Ji-xiu ZHANG
%A Heng-hu SUN
%A Yin-ming SUN
%A Na ZHANG
%J Journal of Zhejiang University SCIENCE A
%V 10
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%P 1334~1340
%@ 1673-565X
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0920237

TY - JOUR
T1 - Correlation between 29Si polymerization and cementitious activity of coal gangue
A1 - Ji-xiu ZHANG
A1 - Heng-hu SUN
A1 - Yin-ming SUN
A1 - Na ZHANG
J0 - Journal of Zhejiang University Science A
VL - 10
IS - 9
SP - 1334
EP - 1340
%@ 1673-565X
Y1 - 2009
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A0920237


Abstract: 
A new method for estimating the degree of [SiO4]4−polymerization of coal gangue is presented. The method uses the relative bridging oxygen number (RBO) based on nuclear magnetic resonance (NMR) techniques. X-ray diffraction (XRD) and 29Si NMR techniques have been used to study phase transitions and silicate polymerization of coal gangue calcined at different temperatures or co-calcined. It has been found that phase transition of clay minerals causes silicate polymerization to change with temperature. In this study, cementing activity and RBO were determined to be inversely related. Generally, activated coal gangue with lower RBO had better cementitious activity.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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