Correlation between ^29Si polymerization and cementitious activity of coal gangue

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...

Full description

Saved in:
Bibliographic Details
Published inJournal of Zhejiang University. A. Science Vol. 10; no. 9; pp. 1334 - 1340
Main Authors Zhang, Ji-xiu, Sun, Heng-hu, Sun, Yin-ming, Zhang, Na
Format Journal Article
LanguageEnglish
Published Hangzhou Zhejiang University Press 01.09.2009
Subjects
Civil Engineering
Classical and Continuum Physics
Engineering
Industrial Chemistry/Chemical Engineering
Mechanical Engineering
X射线衍射
基于规则
核磁共振技术
水泥活性
温度变化
煤矸石
硅酸盐
Coal gangue
TD98
Relative bridging oxygen number (RBO)
Cementitious activity
Degree of polymerization
Nuclear magnetic resonance (NMR)
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography:Degree of polymerization, Relative bridging oxygen number （RBO）, Nuclear magnetic resonance （NMR）, Coal gangue, Cementitious activity
O632.12
TQ172.13
33-1236/O4
ISSN:1673-565X
1862-1775
DOI:10.1631/jzus.A0920237