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NTIS 바로가기韓國地盤工學會論文集 = Journal of the Korean geotechnical society, v.32 no.6, 2016년, pp.41 - 48
서형석 (연세대학교 토목환경공학과) , 조유민 (연세대학교 토목환경공학과) , 윤태섭 (연세대학교 토목환경공학과) , 김광염 (한국건설기술연구원 Geo-인프라연구실)
This study presents the correlations between quantified particle shape parameters and internal friction angles for nine sand specimens including six natural sands and three crushed sands. Specimens are subjected to 3D X-ray computed tomographic imaging and their particles are segmented through the a...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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재료의 입자 형상 정량화에 쓰이는 형상계수는 어떤 것들이 있는가? | 재료의 입자 형상의 정량화는 구형도(Sphericity), 원마도(Roundness), 볼록성(Convexity), 이완도(Elongation), 편평도(Flatness) 등과 같은 형상계수를 통해 가능하며(Wadell, 1932; Wadell, 1933; Krumbein, 1941; Krumbein and Sloss, 1963; Mora and Place, 1998; Zunic and Rosin, 2004; Blott and Pye, 2008; Kim et al., 2016), 이는 대부분 광학 및 전자현미경 등을 통한 2차원 분석에 국한되거나 차트에 의존하여 이루어져 왔다(Folk, 1955; Krumbein andSloss, 1963; Barrett, 1980; Pons et al. | |
입자 형상일 불규칙할수록 지반재료에서는 어떤 특성이 나타나는가? | , 2012).특히 입자의 형상이 불규칙할수록 재료의 최대, 최소간극비(emax, emin) 및 그 차이는 증가하며(Jia and Williams, 2001; Yasin and Safiullah, 2003), 큰 전단강도(Miura etal., 1998; Cho et al., 2006; Kim et al., 2016), 큰 압축성(Yasin and Safiullah, 2003; Cavarretta et al., 2010; Shin and Santamarina, 2012), 낮은 열전도도(Yun and Santamarina, 2008)를 갖는다고 알려져 있으며 이는 입자 형상이 해당 지반재료의 중요한 특성으로써 인식되어야 함을 시사한다. |
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