FLY ASH GEOPOLYMER AFTER EXPOSURE TO ELEVATED TEMPERATURE: MECHANICAL PROPERTIES AND MICROSTRUCTURE

被引：0

作者：

Rovnanik, Pavel ^{[1
]}

机构：

[1] Brno Univ Technol, Fac Civil Engn, Inst Chem, Zizkova 17, Brno 60200, Czech Republic

来源：

NON-TRADITIONAL CEMENT & CONCRETE IV | 2011年

关键词：

fly ash; alkali activation; geopolymer; high temperatures;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Materials based on alkali activated alumnosilicates generally exhibit a very good resistance against exposure to high temperatures. The aim of the presented study was to determine properties of geopolymer prepared via alkali activation of type F fly ash after exposure to high temperatures. Fly ash geopolymer was subjected to temperatures in the range of 200-1200 degrees C for the period of 1 h. Post-thermal treatment test were used to determine the residual compressive and flexural strengths of thermally treated geopolymer material. The microstructural changes caused by the heat were investigated by means of mercury intrusion porosimetry, SEM, HT-XRD and FTIR analysis and the results were correlated to the mechanical behaviour.

引用

页码：130 / 138

页数：9

共 13 条

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