Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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Strength Properties According to the Conditions of Low Carbon Inorganic Composite Using Industrial By-product

산업부산물을 사용한 저탄소 무기결합재의 조건별 강도특성

  • Lee, Yun-Seong (Department of Architectural Engineering, Hanbat National University) ;
  • Lee, Sang-Soo (Department of Architectural Engineering, Hanbat National University) ;
  • Song, Ha-Young (Department of Architectural Engineering, Hanbat National University)
  • Received : 2011.08.26
  • Accepted : 2011.11.30
  • Published : 2012.02.20
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Abstract

The purpose of this study is to examine the potential for reducing the environmental load and $CO_2$ gas when cement is produced by using cement substitutes. These substitutes consisted of blast furnace slag, red mud and silica fume, which were industrial by-products. The most optimum mix was derived when alkali accelerator was added to low carbon inorganic composite mixed with industrial by-product at room temperature. It is determined that hardened properties and the results of compressive strength tests changed based on CaO content, Si/Al, the mixing ratio and the amount of alkali accelerator, curing conditions and W/B. The results of test analysis suggest that the optimum mix of low carbon inorganic composite is CaO content 30%, Si/Al 4, the mixed ratio of alkali accelerator $(NaOH:Na_2SiO_3)$ 50g:50g, the amount of alkali accelerator 100g and W/B 31%. In addition, if contraction is complemented, low carbon inorganic composite with superior performance could be developed.

본 연구에서는 산업부산물인 고로슬래그, 레드머드, 실리카 흄 등을 사용하여 콘크리트의 혼화재가 아닌 시멘트 대체재로 사용하여 시멘트 제조시 배출되는 $CO_2$가스 및 환경부하를 저감하고자 하였다. 고로슬래그, 레드머드, 실리카 흄 등을 혼합한 저탄소 무기결합재에 알칼리 자극제만으로 고온의 소성과정없이 상온에서 제조하기 위한 최적배합을 도출하고자 하였다. 이를 위해 CaO 함유량 및 Si/Al, 알칼리 자극제 혼합비율 및 양, 양생조건 및 W/B 변화에 따른 경화성상 및 압축강도시험을 실시하였다. 시험분석 결과, 저탄소 무기결합재의 최적배합은 CaO 함유량 30%, Si/Al 4, 알칼리 자극제 혼합비율$(NaOHg:Na_2SiO_3g)$ 50g:50g, 알칼리 자극제 양 100g, W/B 31%인 것으로 판단된다. 또한 무기결합재의 단점인 수축을 보완한다면 보다 우수한 성능의 저탄소 무기결합재의 개발이 가능할 것으로 판단된다.

Keywords

References

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