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Fragmentation Fractal Analysis on Particle-size Distribution  

민덕기 (울산대학교 공과대학 건설환경공학부)
이완진 (울산대학교 건설환경공학부)
Publication Information
Journal of the Korean Geotechnical Society / v.19, no.2, 2003 , pp. 199-206 More about this Journal
Abstract
Particle-size distribution in soils is one of the most fundamental physical properties of soils. One of the latest developments in the study of particle-size distributions has focused on the use of fractal theories. In this study, the fragmentation fractals were used for determining the characteristics of the particle-size distribution curve. It was shown that the mass-size distribution method was more practical than the cumulative number-size distribution method. From the co-relation between fractal dimensions($D_{tot}$) and the coefficient of uniformity($C_{u}$), there was a sharp increase in fractal dimensions for $C_{u}$<4, but fractal dimension converged the single value for $D_{u}$$\geq$6. Fractal dimensions were affected by small sized particles for $C_{c}$$\geq$3 and large sized particles for $C_{c}$/<3. As a result of the analysis of the influence of the effective size($D_{10}$), it was observed that the changes of $D_{tot}$/ were nominal beyond the effective size.
Keywords
Cumulative number-size distribution; Fragmentation fractal; Mass-size distribution; Particle-size distribution;
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