Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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A Study on the Stabilization/ Solidification Process Using Blast Furnace Slag

슬래그를 이용한 중금속 이온의 고정화

  • 강성근 (연세대학교 세라믹공학과) ;
  • 방완근 (연세대학교 첨단재료연구소) ;
  • 이승헌 (군산대학교 재료공학과) ;
  • 김창은 (연세대학교 세라믹공학과)
  • Published : 1999.07.01
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Abstract

It is a fundamental experiment to use blast-furnace slag in solidification/stabilization process. The compressive strength and leaching test of Pb and Cr doped samples were evaluated and the effects of heavy-metal ions on the hydration of slag was investigated. Sodium silicates(5wt%) was added as alkali-activator and the effects of replacing a part of slag with flyash or gypsum was also discussed. Pb ion was solidified by encapsulation of matrix. In of slag${\pm}$gypsum binder microstructure was densified by accelerating to form AFt/AFm phase and compressive strength was improved resulting in reducing leaching amount of Pb ion. Cr ion was solidified by substituting with Al ion in aluminate product. Slag+fly ash binder improved compressive strength and decreased leaching amount of Cr ion.

Keywords

References

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