Excitation Effect of Soluble Glass on Composite System with Calcined Coal Gangue and Slag

Abstract:

By studying alkaline-activated complex systems with coal gangue calcined at 750°C and slag, the results can show that under the action of soluble glass, when the weight fraction of calcined coal gangue was less than 30%, mechanical strength of composite systems may be more than 40 MPa. But when the weight fraction of calcined coal gangue is higher than 60%, the strength of complex systems was decreased faster than that of alkali-activated slag cementitious materials. X-ray diffraction (XRD) method and determination of chemically combined water content were used to study hydration course of alkali-activated cementitious materials. The results can show that the major hydration product was zeolite and the change of chemically combined water content was consistent with the results of strength development.

• Periodical: Applied Mechanics and Materials (Volumes 174-177)
• Pages: 30-34
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.174-177.30
• Online since: May 2012
• Authors: Jing Yun Han, Xu Yan Song, Zhi Hai Gao
• Keywords: Calcined Coal Gangue, Chemically Combined Water Content, Hydration Process, Mechanical Strength, Slag, Soluble Glass, XRD Analysis

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