Effective unsaturated hydraulic conductivity of layered sands

T. C J Yeh, D. J. Harvey

Research output: Contribution to journalArticle

56 Scopus citations


The unsaturated hydraulic conductivity, K(ψ), of two homogeneous sands and one layered sand composed of the two homogeneous sands was measured using the steady-state flux control method. The averaged K(ψ) curves of the two homogeneous sands using a direct averaging approach were compared with the measured layered sand K(ψ) data. The result shows that the geometric mean of hydraulic conductivity-suction curves of the coarse and medium sands approximates the measured hydraulic conductivity-suction curve of the layered sand. The observed suction variance and effective hydraulic conductivity were compared with expressions developed from a stochastic theory. The results support the stochastic approach. -from Authors

Original languageEnglish (US)
Pages (from-to)1271-1279
Number of pages9
JournalWater Resources Research
Issue number6
Publication statusPublished - 1990
Externally publishedYes


ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Aquatic Science
  • Water Science and Technology

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