Using Infiltrations of Heptane and Water into Soil Columns to Determine Soil-Water Contact Angles1
- B. Bahrani,
- R. S. Mansell and
- L. C. Hammond2
A horizontal infiltration procedure using two liquids, water and η-heptane, has been presented for determining wetting soil-water contact angles in columns of water-repellent soil. The method can be used to measure contact angles less than, equal to, or greater than 90° and requires minimal reaction time between water and soil during experimental measurements. This technique was applied to two columns of water-repellent Pomello fine sand for six cycles of wetting, leaching, and drying. Wetting contact angles decreased from 101° initially to 91° after the six cycles.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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