Back-analysis of the water retention curve of a GCL on the wetting path. Issue 5 (16th October 2020)

• Record Type: Journal Article
• Authors: Tincopa, M.; Bouazza, A.; Rowe, R. K.; Rahardjo, H.
• Is Part Of: Geosynthetics international. Volume 27:Issue 5(2020)
• Page Start: 523
• Page End: 537
• Publication Date: 2020-10-16
• Subjects: Geosynthetics -- GCL -- Water retention curve -- Wetting path -- Bentonite; Geosynthetics -- Periodicals; Geosynthetics; Periodicals; 624.1892
• DOI: 10.1680/jgein.20.00016
• Languages: English
• ISSNs: 1072-6349

Abstract

Abstract : 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.