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 |
Keywords
- Constant head test
- Hydraulic conductivity
- Mixed soils
- Particle size
- Porosity
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- Environmental Science(all)