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http://dx.doi.org/10.5345/JKIBC.2016.16.4.313

Properties of the Alkali Activated Mortar According to Metakaolin Replacement Ratio  

Seo, Dong-Hyeon (School of Architecture, Yeungnam University)
Hyung, Won-Gil (School of Architecture, Yeungnam University)
Publication Information
Journal of the Korea Institute of Building Construction / v.16, no.4, 2016 , pp. 313-320 More about this Journal
Abstract
The aim of this study is to look into the metakaolin replacement ratio of blast furnace slag based alkali activated slag mortar and its mechanical characteristics according to changes in stimulant concentration. Metakaolin has high fineness, and therefore the fluidity becomes lower as the replacement ratio becomes higher. So in this study, a sufficient value of mixing water was provided to secure fluidity for the characteristic experiment, and a different W/B was derived for each specimen in order to make the fluidity identical. A characteristic experiment was conducted according to the mol concentration of NaOH, which was used as the mixing water that affects fluidity. Additionally, compressive strength measurement, observation of inner microstructure through SEM, acid resistance experiment, and neutralization resistance was conducted. The results of this study revealed that for a high concentration NaOH solution to have even fluidity, a high W/B is necessary, and the functions were enhanced, not degraded.
Keywords
metakaolin; granulated blast furnace slag; NaOH; alkali activated slag mortar;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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