한국결정성장학회지 (Journal of the Korean Crystal Growth and Crystal Technology)

  • 제32권4호
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  • Pages.143-150
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  • 2022
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  • 1225-1429(pISSN)
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  • 2234-5078(eISSN)
한국결정성장학회 (The Korea Association of Crystal Growth)
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알루미늄제련 폐기물을 첨가한 지오폴리머의 물성

Property of geopolymers with aluminum smelting waste

  • 김학민 (경기대학교 신소재공학과) ;
  • 김유택 (경기대학교 신소재공학과)
  • Kim, Hakmin (Department of Materials Engineering, Kyonggi University) ;
  • Kim, Yootaek (Department of Materials Engineering, Kyonggi University)
  • 투고 : 2022.07.20
  • 심사 : 2022.08.09
  • 발행 : 2022.08.31
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초록

알루미늄제련 폐기물을 IGCC 슬래그와 혼합하여 지오폴리머를 제조하고 물성을 기존 IGCC 슬래그 기반 지오폴리머와 비교하였다. 두 원료를 혼합했을 때 Si/Al 비율 1.78에서 가장 좋은 압축강도 값을 보였으며, Si/Al의 변화에 따라서 압축강도 및 밀도의 변화가 민감하지 않아 즉, 혼합 허용범위가 상당히 넓어 상용화시 유리하다고 판단되었다. 알루미늄제련 폐기물을 첨가한 지오폴리머는 기존 IGCC 슬래그 기반 지오폴리머 대비 압축강도가 높은 것을 확인할 수 있었으며, TCLP법에 의해 안전성 확인을 한 결과 인체에 무해하다는 것을 확인할 수 있었다. 따라서 알루미늄제련 폐기물을 일정 비율로 IGCC 슬래그와 혼합하여 지오폴리머를 제조한다면 지오폴리머의 물성 향상에도 도움이 될 뿐만 아니라 안전한 건축자재로 재활용될 수 있다고 결론지을 수 있었다.

Geopolymers were made by mixing IGCC slag and aluminum smelted waste and their properties were compared with those of IGCC slag based geopolymers. When two raw materials were mixed, the highest compressive strength was obtained at 1.78 of Si/Al ratio. Because the change in compressive strength and density was not so sensitive by the change in Si/Al ratio; that is, the permissible range of Si/Al ratio mixing ratio is broad, it was speculated this broad permissible range would be advantageous for commercialization. The Compressive strength of geopolymers including red mud was higher than that of IGCC based ones and the safety was confirmed by TCLP test. Therefore, it was concluded that the making geopolymers by mixing red mud not only enhances the properties of geopolymers but also gives a recyclability as safe construction materials.

키워드

과제정보

이 논문은 2022년도 정부(산업통산지원부)의 재원으로 한국산업기술진흥원의 지원을 받아 수행된 연구임(P0017012, 산업혁신인재성장지원).

참고문헌

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