Back-analysis of the water retention curve of a GCL on the wetting path

M. Tincopa, A. Bouazza, R. K. Rowe, H. Rahardjo

Research output: Contribution to journalArticleResearchpeer-review

10 Citations (Scopus)


A new approach is presented to obtain the water retention curve of a geosynthetic clay liner (GCL) on the wetting path (i.e. when it is hydrating). This approach is based on a back-analysis process using data from a hydration test. The back-analysis method was validated by comparing it to conventional experimental measurement techniques such as vapour equilibrium, chilled-mirror dew point and osmotic techniques as well as published data. This approach is shown to be a viable alternative to quickly identify the retention properties of a GCL on the wetting path.

Original languageEnglish
Pages (from-to)523-537
Number of pages15
JournalGeosynthetics International
Issue number5
Publication statusPublished - Oct 2020


  • Bentonite
  • GCL
  • Geosynthetics
  • Water retention curve
  • Wetting path

Cite this