Characterization of artificial aggregates fabricated with direct sintering method (직화소성법으로 제조된 인공골재의 특성 분석)

Kangduk Kim (김강덕); KANG SEUNG GU (강승구)

Characterization of artificial aggregates fabricated with direct sintering method

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2011, 21(1), pp.34-40
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering

Kangduk Kim ¹, KANG SEUNG GU ¹

¹경기대학교

Accredited

ABSTRACT

The bulk density, water absorption and microstructure of the artificial aggregates were controlled as a function of sintering temperature (1100 and 1200oC) and time (10~60 min) in the fabrication process of the artificial aggregates by the direct sintering process using dredged soil, the inorganic wastes. Also, the physical properties of the artificial aggregates fabricated according to the different sintering methods such as the direct sintering method used in this study and the increasing temperature sintering method used in the previous report, were compared and analysed. The bulk density of aggregates sintered at 1200oC by the direct sintering method showed below 1.0, and the thickness of a shell and the pore size of the black core were increased with sintering temperature. Also, in the same sintering temperature, the area of black core was decreased, the thickness of shell was increased and the water absorption was decreased with sintering time. The black core of artificial aggregates of bulk density below 1.0 had the similar microstructure, regardless of sintering methods. In contrast, the shell of aggregates fabricated by the increasing temperature sintering method showed more dense microstructure than that by direct sintering method, hence the water absorption of aggregate sintered using direct sintering was relatively high. Thus, the direct sintering method is suitable for fabrication of artificial aggregates in ceramic carriers or absorbents applications.

KEYWORDS

Bulk density, Water absorption, Black core, Shell, Direct sintering method

Citation status

* References for papers published after 2023 are currently being built.

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This paper was written with support from the National Research Foundation of Korea.

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