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This article in SSSAJ

  1. Vol. 37 No. 4, p. 532-534
    Received: Dec 8, 1972
    Accepted: Jan 30, 1973

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Using Infiltrations of Heptane and Water into Soil Columns to Determine Soil-Water Contact Angles1

  1. B. Bahrani,
  2. R. S. Mansell and
  3. 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.

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