Abstract
This study investigates the hydraulic conductivity (K) of binary mixed soils containing two different-sized silica particles, with the ultimate goal of developing the porosity (n) and equivalent particle size (deq) estimating formulas for binary mixed soils. Theoretical backgrounds for K 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 K of tested materials decreases with an increase in volume fraction of small particles (SCV) when SCV < SC*V (volumetric critical small particle content) because of the decreases in both n and deq. In contrast, when SCV > SC*V, K shows less change with SCV because of the offset mechanism between increased n and decreased deq. Additionally, n and deq estimating methods for mixed soils are suggested in this study and compared with the experimental results.
| Original language | English |
|---|---|
| Article number | 04017104 |
| Journal | Journal of Geotechnical and Geoenvironmental Engineering |
| Volume | 144 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2018 Jan 1 |
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Keywords
- Constant head test
- Hydraulic conductivity
- Mixed soils
- Particle size
- Porosity
ASJC Scopus subject areas
- Environmental Science(all)
- Geotechnical Engineering and Engineering Geology
Cite this
Estimating porosity and particle size for hydraulic conductivity of binary mixed soils containing two different-sized silica particles. / Choo, H.; Lee, Woojin; Lee, C.; Burns, S. E.
In: Journal of Geotechnical and Geoenvironmental Engineering, Vol. 144, No. 1, 04017104, 01.01.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Estimating porosity and particle size for hydraulic conductivity of binary mixed soils containing two different-sized silica particles
AU - Choo, H.
AU - Lee, Woojin
AU - Lee, C.
AU - Burns, S. E.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - This study investigates the hydraulic conductivity (K) of binary mixed soils containing two different-sized silica particles, with the ultimate goal of developing the porosity (n) and equivalent particle size (deq) estimating formulas for binary mixed soils. Theoretical backgrounds for K 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 K of tested materials decreases with an increase in volume fraction of small particles (SCV) when SCV < SC*V (volumetric critical small particle content) because of the decreases in both n and deq. In contrast, when SCV > SC*V, K shows less change with SCV because of the offset mechanism between increased n and decreased deq. Additionally, n and deq estimating methods for mixed soils are suggested in this study and compared with the experimental results.
AB - This study investigates the hydraulic conductivity (K) of binary mixed soils containing two different-sized silica particles, with the ultimate goal of developing the porosity (n) and equivalent particle size (deq) estimating formulas for binary mixed soils. Theoretical backgrounds for K 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 K of tested materials decreases with an increase in volume fraction of small particles (SCV) when SCV < SC*V (volumetric critical small particle content) because of the decreases in both n and deq. In contrast, when SCV > SC*V, K shows less change with SCV because of the offset mechanism between increased n and decreased deq. Additionally, n and deq estimating methods for mixed soils are suggested in this study and compared with the experimental results.
KW - Constant head test
KW - Hydraulic conductivity
KW - Mixed soils
KW - Particle size
KW - Porosity
UR - http://www.scopus.com/inward/record.url?scp=85033800494&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85033800494&partnerID=8YFLogxK
U2 - 10.1061/(ASCE)GT.1943-5606.0001802
DO - 10.1061/(ASCE)GT.1943-5606.0001802
M3 - Article
AN - SCOPUS:85033800494
VL - 144
JO - Journal of Geotechnical and Geoenvironmental Engineering - ASCE
JF - Journal of Geotechnical and Geoenvironmental Engineering - ASCE
SN - 1090-0241
IS - 1
M1 - 04017104
ER -