Manufacture of Ordinary Portland Cement Clinker Using Cement Paste of the Waste Concrete

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doi:2003.40.8.804

J. Korean Ceram. Soc. > Volume 40(8); 2003 > Article

Journal of the Korean Ceramic Society 2003;40(8): 804.
doi: https://doi.org/10.4191/kcers.2003.40.8.804

폐콘크리트로부터 회수된 시멘트 페이스트 미분말의 시멘트 원료화 연구

안지환, 김형석, 조진상, 한기천, 한기석, 김환¹

한국지질자원연구원 자원활용소재연구부
¹서울대학교 재료공학부

Manufacture of Ordinary Portland Cement Clinker Using Cement Paste of the Waste Concrete

ABSTRACT

The fine powder produced by heating and grinding of the waste concrete in the waste construction was investigated whether utilize as substitution raw material of SiO$_2$, CaO, and Al$_2$O$_3$ source for OPC clinker manufacture is possible or not. In order to synthesize OPC clinker, limestone, shale, converter slag and fly ash were used as main raw materials, and modulus was fixed LSF 91.0, SM 2.60, IM 1.60. The synthesized clinkers were characterized. The Main products of synthesized clinker were C$_3$S, ${beta}$-C$_2$S, C$_3$A, C$_4$AF as OPC clinker at 1,43$^{circ}C$. As a result of TG-DTA and burnability index(B.U) analysis of each raw mixtures, the formation temperature of clinker phases was similar and B.I was showed easy burning as 48.6∼51.4.

Key words: Ordinary Portland Cement (OPC), Waste concrete, Clinker, Paste