Hydration of Deconstructed Geosynthetic Clay Liners Under Daily Thermal Cycles
JD Garcia, RWI Brachman, R. Kerry Rowe 
In the proceedings of: GeoEdmonton 2018: 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC Session: Geosynthetics II (Walls and Barrier Systems)
ABSTRACT: Geosynthetic clay liners (GCLs) have been shown to achieve lower hydraulic conductivity and, hence, better performance as a barrier material than non-prehydrated specimens provided adequate hydration has occurred. However, there is evidence that exposure to daily thermal cycles could inhibit hydration of the bentonite which is significant in field applications with delayed installation. In this paper, two deconstructed GCLs (needle-punched fibres cut) with powdered and fine granular bentonite overlying a 450mm-thick silty sand foundation at 16% moisture content are subjected to laboratory simulated daily thermal cycles of 24-60 °C. Different configurations of the deconstructed GCLs allow the roles of the needle-punched fibres, bentonite granularity, and thermal treatment on hindering or facilitating the effects of thermal cycles to be investigated.
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Garcia, JD, Brachman, RWI, Rowe, R. Kerry (2018) Hydration of Deconstructed Geosynthetic Clay Liners Under Daily Thermal Cycles in GEO2018. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Garcia_GEO2018_356,
author = {{Garcia, JD}, {Brachman, RWI}, {Rowe, R. Kerry}}
title = {Hydration of Deconstructed Geosynthetic Clay Liners Under Daily Thermal Cycles }
booktitle = {Proceedings of the 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC }
year = {2018}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {Hydration of Deconstructed Geosynthetic Clay Liners Under Daily Thermal Cycles }
booktitle = {Proceedings of the 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC }
year = {2018}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }