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http://dx.doi.org/10.5345/JKIBC.2022.22.6.663

Magnesium Sulfate Resistance of Geopolymer Incorporating Evaporated Rice Husk Powder  

Cho, Seung-Bi (Department of Architectural Engineering The Graduate School Pusan National University)
Kim, Young-Su (Department of Architectural Engineering The Graduate School Pusan National University)
Publication Information
Journal of the Korea Institute of Building Construction / v.22, no.6, 2022 , pp. 663-672 More about this Journal
Abstract
The purpose of this study is to evaluate the magnesium sulfate resistance of a geopolymer mixed with rice husk powder. General concrete, silica fume mixed concrete, and binary blended geopolymer were selected as comparison targets to confirm the magnesium sulfate resistance, and sulfate deterioration was calculated using the compressive strengths with ages. In addition, the weight change rate and the relative dynamic coefficient of the geopolymer were comparatively analyzed, and the degree of etteringite formation was confirmed using X-ray diffraction analysis. the experiment, the geopolymer mixed with 10% rice husk powder showed 10.8% higher compressive strength than concrete with silica fume when submerged for 56 days. Also, the geopolymer mixed with rice husk powder showed a small weight change rate of 0.9 to 1.45%. composition after immersion in magnesium sulfate through X-ray diffraction analysis, it was observed that a small amount of ettringite was dispersed in the geopolymer containing rice husk powder. Thus, there is a high correlation with the corrosion resistance of magnesium sulfate
Keywords
magnesium; sulfate attack; rice husk powder; geopolymer;
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Times Cited By KSCI : 4  (Citation Analysis)
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