A Study on the Plasticity Enhancement of Coal Fry Ash-Clay Bodies

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J. Korean Ceram. Soc. > Volume 33(2); 1996 > Article

Journal of the Korean Ceramic Society 1996;33(2): 135.

석탄회-점토계 소지의 가소성 증진에 관한 연구

이기강, 이효진, 박천주, 김동원, 김유택, 김석범

경기대학교 재료공학과

A Study on the Plasticity Enhancement of Coal Fry Ash-Clay Bodies

ABSTRACT

Fly Ashes which are produced from coal-fired powder plants and classified as general waste can be used as raw materials for bricks and tiles because of their compositional similarity with clays. There was a limit of substituting fly ash for clay because plasticity decreased with increasing fly ash additions. Accordingly this study tried to suggest a feastibility of enhancing the substitution ratio by controlling the interfacial properties of fly ash. The slip with 1:1 volume ratio showed that best dispersive characteristics under the condition of pH 2 Filter pressed cakes made of pH 2 slips also showed better plastickity than those of untreated ones. of pH 2 Filter pressed cakes made of pH 2 also shwoed better plasticity than those of untreated ones.

Key words: Coal fly ash, Plasticty, Clay, Filter press