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  4. Analysis of the geomechanical characterization of coarse granular materials using the parallel gradation method
 
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Analysis of the geomechanical characterization of coarse granular materials using the parallel gradation method
Dr. Villalobos-Jara, Felipe 
Facultad de Ingeniería 
Dorador, Leonardo
10.4067/S0718-28132020000100050
Obras y Proyectos
2020
The geotechnical characterization of coarse granular materials such as very coarse-grained soils, rockfills, mining waste rocks and related materials is one of the key themes in geotechnical engineering but least studied and developed. Although there are some geotechnical standards and accepted geotechnical practice, there is not a standard for size-scaling, which is a critical step in advanced stage engineering (i.e. detailed design) on large structures involving this kind of materials. Several size-scaling techniques are available for use, with advantages and disadvantages. Among these, the parallel gradation method PGM (also known as homothetic grain size distribution), is one of the current practices and used for more than 50 years, but surprisingly just a few studies have corroborated its capability, and under specific material types. This work assesses a detailed database covering the development of this method from its first uses up to now. The application of this method is analysed based mainly on the material maximum internal friction angle and the Marsal’s particle breakage index (Bg).
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0718-2813-oyp-27-0050.pdf

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Coarse granular materials
Parallel gradation method
Geotechnical characterization
Size-scaling
Shear strength
Particle breakage
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