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J. Korean Ceram. Soc. > Volume 46(4); 2009 > Article
Journal of the Korean Ceramic Society 2009;46(4): 365.
doi: https://doi.org/10.4191/kcers.2009.46.4.365
시멘트 재료의 수밀성에 대한 스테아르산의 영향
라승현, 강현주, 송명신
강원대학교 화학공학연구소
Effects of Stearic Acid on the Watertightness Properties of the Cementitious Materials
Seung-Hun Na, Hyun-Ju Kang, Myong-Shin Song
Research Institate of Chemical Engineering, Kangwon National University
ABSTRACT
It is well known that the properties of concrete such as the compressive strength, water permeability, water tightness and durability are affected by micro-structure in hardened cement paste. Especially, for durability of concrete, watertightness of cementitious materials is the most critical property among various properties. Recently, many types of materials as organic and/or inorganic materials are used for watertightness of concrete. In this study, The effect of Stearic Acid at $0.5;wt%{sim}3.0;wt%$ adding ratios on the hydration and watertightness property of cement were investigated. And we also discussed the changing of microstructure in hardened cement paste by addition of Stearic Acid. Cement paste with Stearic Acid showed improvement of watertightness by reducing of cement total pore volume and decomposition of Stearic Acid.
Key words: Cement, Stearic acid, Water-absorption coefficient, Watertightness, Pore structure
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