Application of Coal Wastes to Clay Bricks and Investigation of Their Physical Properties

Jin-Ho Jung; Jung Whan Yoo; Jin-Uk Lee; Hyung-Tae Kim

Journal of Industrial and Engineering Chemistry, Vol.11, No.2, 175-179, March, 2005

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Application of Coal Wastes to Clay Bricks and Investigation of Their Physical Properties

Jin-Ho Jung, Jung Whan Yoo, Jin-Uk Lee, and Hyung-Tae Kim^†

Materials Team, Korea Institute of Ceramic Engineering and Technology, Seoul 153-801, Korea

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The reuse of coal waste byproducts formed during mine development or the digging process is important for solving environmental problems and increasing waste material recycling. In this study, specimens were prepared by mixing 10,20,30,40, and 50% of coal waste with brick body. Water absorption and compressive strength were investigated as functions of the amount of coal waste and the calcination temperature. Increased coal waste content generally increased the water absorption and decreased the compressive strength. When up to 30% coal waste was mixed into clay at 1300℃, the specimens satisfied the 1st-class brick criteria of the Korean Standard (water absorption < 10%, compressive strength > 210 kgf/cm2).

Keywords:coal waste;clay brick;water absorption;compressive strength

[References]

Lee JU, Lee SM, Kim HT, Choi ES, Lee YS, J. Kor. Ceram. Soc., 39, 1164 (2002)
Weng CH, Lin DF, Chiang PC, Adv. Environ. Res., 7, 679 (2003)
Korean Patent Application No. 10-2004-0003201
Korean Patent Application No. 2000-0038199
US Patent No. 5278111 (1994)
Rim JM, Kim BU, J. Kor. Solid Wastes Engin. Soc., 16, 466 (1999)
Kim KW, Doh YS, Li XF, J. Kor. Soc. Agricul. Eng., 43, 132 (2001)
Yeon KS, Monthyly Environment 21, 9, 123 (2002)
KS L 4008 (1996)
KS L 1203 (2002)
Song JT, Yun SD, Ryou DW, Han KS, J. Kor. Ceram. Soc., 33, 771 (1996)
KS L 4201 (1997)

[1] Lee JU, Lee SM, Kim HT, Choi ES, Lee YS, J. Kor. Ceram. Soc., 39, 1164 (2002)

[2] Weng CH, Lin DF, Chiang PC, Adv. Environ. Res., 7, 679 (2003)

[3] Korean Patent Application No. 10-2004-0003201

[4] Korean Patent Application No. 2000-0038199

[5] US Patent No. 5278111 (1994)

[6] Rim JM, Kim BU, J. Kor. Solid Wastes Engin. Soc., 16, 466 (1999)

[7] Kim KW, Doh YS, Li XF, J. Kor. Soc. Agricul. Eng., 43, 132 (2001)

[8] Yeon KS, Monthyly Environment 21, 9, 123 (2002)

[9] KS L 4008 (1996)

[10] KS L 1203 (2002)

[11] Song JT, Yun SD, Ryou DW, Han KS, J. Kor. Ceram. Soc., 33, 771 (1996)

[12] KS L 4201 (1997)