그라우트 재료로서 광물찌꺼기 혼화재의 활용 가능성 평가
Applicability Evaluation of Tailing Admixture as Grout Material
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
전남 해남에 위치한 ○○광산의 광물찌꺼기를 이용하여 그라우트 재료로서의 활용 가능성을 평가하였다. 광물찌꺼기의 광물학적 특성을 살펴보기 위하여 XRD 분석을 실시하였다. 또한 광물찌꺼기와 시멘트를 3가지비율로 혼합한 그라우트 재료의 물리적 및 역학적 특성을 살펴보기 위하여 양생기간에 따른 흐름도, 탄성파속도, 일축압축강도 시험을 각각 실시하였다. XRD 분석 결과에 의하면 본 광산의 광물찌꺼기는 대부분 석영, 방연석, 황철석 등의 광물들로 구성된 것으로 나타났다. 흐름시험 결과는 광물찌꺼기의 혼합비율이 높아질수록 흐름도가감소하는 경향을 보였다. 탄성파속도는 흐름도와 마찬가지로 양생기간에 관계없이 광물찌꺼기의 혼합비율이높아질수록 낮아지는 경향을 보였다. 일축압축강도 및 탄성계수 또한 양생기간에 관계없이 광물찌꺼기 혼합비율이 증가할수록 작아지는 경향을 보였다. 광물찌꺼기를 혼합한 그라우트 주입재의 물리적 및 역학적 특성만을고려할 때 이들 결괏값은 그라우트 재료로서 충분히 활용 가능성을 가지고 있다고 판단된다. 하지만 광물찌꺼기내에 방연석과 황철석 등 금속광물이 포함되어 있어 지반 내 주입 시 환경오염을 일으킬 수 있으므로 향후이에 대한 대책방안이 고려되어야 할 것으로 사료된다.
Abstract
The purpose of this study is to evaluate the applicability of tailing in the OO mine as a grout material. For the purpose, XRD analysis was performed for mineralogical properties of tailing. In addition, flow, velocity, and uniaxial compressive strength tests were carried out for physical and mechanical properties of a grout material with the mixing ratio of cement and tailing and curing periods. By the result of XRD analysis, tailing of the mine was found to mostly consist of quartz, galena, and pyrite. The flow observed by the flow test showed decreasing tendency with increasing the mixing ratio of tailing. The velocity was also lowered with increasing the mixing ratio of tailing regardless of curing periods. The uniaxial compressive strength as well as Young’s modulus also show a tendency to decrease with increasing the mixing ratio of tailing independently on the curing periods. Considering only the physical and mechanical properties of a grout material with tailing, the results are considered to be sufficiently used as a grout material. However, since metallic minerals such as galena and pyrite in tailing contents and these are causing environmental contamination, countermeasures should be considered for this problem in future.
참고문헌 (20)
- 천병식, "손상된 흙댐 코어의 보수 · 보강을 위한 CGS 공법의 적용성", 한국지반공학회논문집, 19(6), pp.325~334 (2003), 한국지반공학회
- Chun, B. -S., "Reinforcement of building foundation by the low slump mortar grout, Korea", Journal of the Korean Geotechnical Society, pp.71~76 (2000)
- Chun, B.-S., "A study on the ground improvement by compaction grouting system", Journal of the Korean Society for Railway, 2(4), pp.9~19 (1999)
- Chun, B. -S., "Settlement restraint of soft ground by low slump mortar injection, Korea", Journal of the Korean Geotechnical Society, 17(6), pp.53~67 (2001)
- Ferraris, C. F., "The influence of mineral admixtures on the rheology of cement paste and concrete", Cement and Concrete Research, 31, pp.245~255 (2001)
- Gustafsson, G., "Prediction of groutability from grout properties and hydrogeological data", Tunneling and Underground Space Technology, 11(3), pp.325~332 (1996)
- Hallal, A., "Combined effect of mineral admixtures with superplasticizers on the fluidity of the blended cement paste", Construction and Building Maerials, 24, pp.1418~1423 (2010)
- 한천구, "시멘트 페이스트의 유동 특성에 관한 평가방법 비교연구", 한국건축시공학회지, 6(3), pp.75~82 (2006), 한국건축시공학회
- Han, J., "Simplified method for consolidation rate of stone column reinforced foundation", Journal of Geotechnical Engineering, 127(7), pp.597~603 (2001), ASCE
- Kang, C. U., "A study on evaluation of rheological properties of high performance concrete by a simple test, Korea", Journal of the Korea Concrete Institute, pp.861~864 (2007)
- Kim, D. H., "Injection effect of bio-grout for soft ground", Advanced Science Letter, 19, pp.468~472 (2013)
- Kim, D. H., "Effects of ground conditions on microbial cementation in soils", Materials, 7, pp.143~156 (2014)
- 김규헌, "순환골재와 플라이애시가 콘크리트 유동성 및 강도에 미치는 영향", 콘크리트학회 논문집, 25(2), pp.241~250 (2013), 한국콘크리트학회[DOI]
- KSRM, "Korea standard", Korean Society for Rock Mechanics, 1~123 (2010)
- "Testing method for compressive strength of hydraulic cement mortars", Korean Agency for Technology and Standards, 1~5 (2007)
- Kutzner, C., "Grouting of Rock and Soil" (1996), A. A. Balkema
- 이승열, "전남 해남의 순신 금광산 지역에 산출하는 응회질암에 포획된 유리포유물", 암석학회지, 18(4), pp.337~348 (2009), 한국암석학회
- Moisan report 2006, "Panther, C. A.", ~ (2006)
- Park, C. -K., "A study on the rheology properties of cement paste with variation of quality and type of mineral admixture", Journal of the Korean Concrete Institute Fall Research Conference, 15(1), pp.107~113 (2003)
- Yoshikuni, H., "Consolidation of soils by vertical drain wells with finite permeability", Soils and Foundation, 15(1), pp.35~46 (1974)