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Water 2017, 9(12), 942; https://doi.org/10.3390/w9120942

Comparison of Saturated Hydraulic Conductivity Estimated by Three Different Methods

1
Aquanty, Inc., 564 Weber Street North, Unit 2, Waterloo, ON N2L 5C6A, Canada
2
Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada
3
Department of Earth and Environmental Sciences & The Earth and Environmental Science System Research Center, Chonbuk National University, Jeonju-si 54896, Korea
4
Land, Water and Environment Department, Faculty of Agriculture, The University of Jordan, Amman 11942, Jordan
5
School of Earth and Environmental Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
*
Author to whom correspondence should be addressed.
Received: 7 November 2017 / Revised: 29 November 2017 / Accepted: 1 December 2017 / Published: 4 December 2017
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Abstract

This study compares saturated hydraulic conductivities ( K s ) of three sandy soils such as coarse, medium and fine sand. The K s was obtained using three different methods: empirical methods based on the grain size analysis, the relative effective porosity model (REPM), and breakthrough curve analyses based on tracer tests. Column drainage tests were performed to characterize the water retention properties of the samples, which are required in the REPM. Bench scale tracer tests with various conditions were conducted to obtain reasonable linear velocities of the samples using breakthrough curve analyses and then K s was estimated using Darcy’s law. For the REPM, the differences of K s for the coarse and fine sand soils were less than one order of magnitude; however, the difference of K s values between the empirical methods and the breakthrough curve analyses was larger than one order of magnitude. The comparison results suggest that the REPM can be a reliable method for estimating K s for soil grains, and is cost effective due to its experimental simplicity. View Full-Text
Keywords: hydraulic conductivity; relative effective porosity model; breakthrough curve analysis; grain size analysis hydraulic conductivity; relative effective porosity model; breakthrough curve analysis; grain size analysis
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Hwang, H.-T.; Jeen, S.-W.; Suleiman, A.A.; Lee, K.-K. Comparison of Saturated Hydraulic Conductivity Estimated by Three Different Methods. Water 2017, 9, 942.

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