Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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A Study on Strength Properties of Soil Cement Specimen using Processed Recycle Resources as Cement Admixtures

가공된 순환자원을 시멘트 혼화재로 활용한 흙 시멘트 공시체의 강도 특성에 관한 연구

  • Received : 2017.10.10
  • Accepted : 2017.10.20
  • Published : 2017.10.31
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Abstract

In this study, an influence of mixing ratio among firing oyster shell, non-firing oyster shell, magnetic separated converter steel slag and fly ash used as admixtures on strength properties of soil cement was evaluated by correlation analysis among compressive strength, deformation modulus and mixing ratio of admixtures. As a result, the strength of the specimens containing non-firing oyster shells was found to be larger than that of firing oyster shells, and it was confirmed that firing oyster shells could negatively affect the strength of soil cement specimens unlike previous studies. In addtion, there was a positive correlation between the ratio of magnetic separated converter slag and strength properties, so it is confirmed that it can be used as an admixture.

본 연구에서는 소성 굴패각, 비소성 굴패각, 자력선별된 전로 제강슬래그와 Fly ash를 혼화재로 활용하였을 때 각 재료가 흙 시멘트 강도에 미치는 영향을 일축압축강도, 탄성계수와 배합비 간의 상관관계 분석을 통하여 평가하였다. 연구 결과 비소성 굴패각을 배합한 공시체 강도가 소성 굴패각을 배합한 공시체 강도보다 크게 나타났으며, 이에 따라 기존 연구와 달리 소성 굴패각이 흙 시멘트 공시체 강도에 부정적인 영향을 끼칠 수 있음이 확인되었다. 또한 자력 선별된 전로 제강슬래그 비율과 강도 특성사이에 양의 상관관계가 존재하여 이를 혼화재로 활용할 수 있는 가능성이 확인되었다.

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References

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