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J. Korean Ceram. Soc. > Volume 39(12); 2002 > Article
Journal of the Korean Ceramic Society 2002;39(12): 1164.
doi: https://doi.org/10.4191/kcers.2002.39.12.1164
Fly Ash를 이용한 고령토벽돌의 소결 특성
이진욱, 이성민, 김형태, 최의석, 이용석1
요업기술원 도자기연구센터
Microstructure and Mechanical Properties of the Sintered Kaolin Block with Fly Ashes
Jin-Uk Lee, Sung-Min Lee, Hyung-Tae Kim, Eui-Seok Choi, Yong-Seok Lee1
Pottery Research Center, Korea Institute of Ceramic Engineering and Technology
1DaePyung Ceramics Co. Ltd.
The effect of fly ash addition to the kaolin block has been investigated. The addition affected the firing temperature and physical properties such as water absorption and compressive strength. The starting materials were from korea natural resources and the fly ash were from the power plant using coal as fuel, containing free carbon of 8∼9 wt%. The starting natural materials were mixed with 5 different proportions of fly ash, pressed and then sintered at 1050, 1100, 1150 and 1200${circ}C$. With sintering temperature, water absorption decreased and compressive strength increased. When specimens were sintered at the temperature lower than 1100${circ}C$, water absorption increased and strength decreased with fly ash content. In contrast, when sintering was done at the temperature higher than 1150${circ}C$, water absorption increased with fly ash content similarly but strength was improved.
Key words: Fly ash, Kaolin block, Strength, Water absorption
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