Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Experimental Evaluation on Occurrence Possibility of Pollutants from Aggregates

순환골재의 오염물질 발생 가능성에 관한 실험적 평가

  • Park, Jeong-Ho (Department of Environmental Engineering, Kumoh National Institute of Technology) ;
  • Seong, Jin-Uk (Department of Environmental Engineering, Kumoh National Institute of Technology) ;
  • Park, Je-Chul (Department of Environmental Engineering, Kumoh National Institute of Technology)
  • 박정호 (금오공과대학교 환경공학과) ;
  • 성진욱 (금오공과대학교 환경공학과) ;
  • 박제철 (금오공과대학교 환경공학과)
  • Received : 2013.05.02
  • Accepted : 2013.06.20
  • Published : 2013.06.30
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Abstract

This study was on leaching test(KSLT, TCLP) of the aggregate for the products(RA-1) and for the site(RA-2) to evaluate the characteristics of contaminants and the possibility of contamination arising from the aggregate. On the basis pH, conductivity and heavy metal contents in the aggregate, RA-1 indicated higher than RA-2. As a result of the leaching test, the pollutants were eluted from the aggregate increased as the particle size of the aggregate was smaller. The pH in the aggregate had a strong alkali by a pH value of 9.0~12.3, the conductivity was higher in less than 10mm RA-1 due to the leaching of dissolved inorganic ions. The heavy metals satisfied the leaching standards of KSLT and less 10% was eluted from the aggregate. As a result of evaluating water pollution possibility of the aggregate, the pH displayed in items with a very high possibility of contamination, conductivity and turbidity did in item with a low possibility of contamination and on the other hand the heavy metals did in item with a very low possibility of contamination.

본 연구는 순환골재에서 발생하는 오염물질의 특성과 오염 가능성을 평가하기 위해 생산제품 순환골재(RA-1)와 현장 순환골재(RA-2)의 용출시험을 실시하였다. 순환골재의 pH, Conductivity, 중금속 함량은 RA-2 보다 RA-1이 높게 나타났다. 용출시험결과, 순환골재로부터 용출되는 오염물질은 입경이 작을수록 높게 나타났다. 순환골재의 pH는 9.0~12.3으로 강알칼리성으로 나타났고, Conductivity는 10mm 이하에서 높게 나타났다. 중금속은 KSLT의 용출기준을 만족하였고, 순환골재로부터 약 10% 이하로 용출되었다. 순환골재의 수질 오염 가능성을 평가한 결과, 오염 가능성이 매우 높은 항목에는 pH, 오염 가능성이 낮은 항목에는 Conductivity, Turbidity, 오염 가능성이 매우 낮은 항목에는 중금속으로 나타났다.

Keywords

References

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Cited by

  1. Experimental Study on the pH of Recycled Aggregate vol.4, pp.1, 2016, https://doi.org/10.14190/JRCR.2016.4.1.062