A new simple and low-cost air permeameter for unsaturated soils

Rui Chen, Jun Wen Huang, Chao Zhou, Yang Ping, Zhong Kui Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)


Air permeability, ka, plays an important role in understanding the air transport behavior in unsaturated soils. As for the measurement of ka, existing air permeameters using steady-state methods are relatively complicated and costly. Therefore, in this study, a new simple and low-cost air permeameter was developed, which can supply steady air pressure on soil specimen and measure the flow rate of air through soil specimen accurately. To verify the reliability of this new air permeameter, a comparison of ka of clay, silt loam, and sandy loam specimens measured using the new air permeameter and the one proposed in ASTM D6539 was conducted. One-way analysis of variance shows that the difference of the results from the two air permeameters is not significant (p > 0.05).

Original languageEnglish
Article number105083
JournalSoil and Tillage Research
Publication statusPublished - Sept 2021


  • Air permeability
  • Air permeameter
  • Air pressure
  • Flow rate
  • Unsaturated soil

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Soil Science
  • Earth-Surface Processes


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