| Autor: |
Akram, Ilyas, Azam, Shahid |
| Předmět: |
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| Zdroj: |
Geotechnical & Geological Engineering; Jan2022, Vol. 40 Issue 1, p469-481, 13p |
| Abstrakt: |
The main objective of this paper was to investigate saturated-unsaturated flow through a silty sand. Based on laboratory characterization, this research developed a simple method to determine the unsaturated hydraulic conductivity using a single sensor and a digital camera. Results indicated a soil with marginal water holding capacity (air entry value of 8 kPa and residual suction value of 21 kPa) and a distinct color change from desiccated (light grey) to saturated (dark grey) state. The modified test method successfully determined the hydraulic conductivity function following a newly developed sigmoidal equation. The difference between the upper bound and the lower bound gradually reduced with suction and converged at vapor conductivity. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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