Estimating Porosity and Particle Size for Hydraulic Conductivity of Binary Mixed Soils Containing Two Different-Sized Silica Particles
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 144, Issue 1
Abstract
This study investigates the hydraulic conductivity () of binary mixed soils containing two different-sized silica particles, with the ultimate goal of developing the porosity () and equivalent particle size () estimating formulas for binary mixed soils. Theoretical backgrounds for of mixed soils were reviewed. In addition, a series of constant head permeameter tests for mixtures with three different size ratios between small and large particles were performed. It is demonstrated that the of tested materials decreases with an increase in volume fraction of small particles () when (volumetric critical small particle content) because of the decreases in both and . In contrast, when , shows less change with because of the offset mechanism between increased and decreased . Additionally, and estimating methods for mixed soils are suggested in this study and compared with the experimental results.
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Acknowledgments
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (NRF-2015R1A2A2A01006337).
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 144 • Issue 1 • January 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Feb 21, 2017
Accepted: Jun 14, 2017
Published online: Nov 10, 2017
Published in print: Jan 1, 2018
Discussion open until: Apr 10, 2018
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