Moisture Desorption Isotherms and Thermodynamic Characteristic of Prehydrated and Extruded GCL

Book chapter


Loh, E.W.K. and Wijeyesekera, D.Chitral 2008. Moisture Desorption Isotherms and Thermodynamic Characteristic of Prehydrated and Extruded GCL. in: Proceedings of Advances in Computing and Technology University of East London, School of Architecture Computing and Engineering. pp. 148-153
AuthorsLoh, E.W.K. and Wijeyesekera, D.Chitral
Abstract

An experimental investigation into the drying of pre-hydrated and extruded GCL is
presented in this paper. Moisture desorption isotherm at temperature from 20 to 40°C and water
activity from 0.20 to 0.70 were determined using the static gravimetric method. The moisture
isotherms were sigmoid shaped and were influenced by the thermal environment. The Guggenheim-
Aderson-DeBoer (GAB) was used to fit experimental values using a non-linear regression analysis.
GAB model was appropriate to predict the desorption equilibrium moisture content of pre-hydrated
and extruded GCL for the range of temperatures and water activities studied. Finally, an expression
for predicting the thermal property was developed.

KeywordsMoisture desorption isotherm; Geosynthetic Clay Liners; hydraulic engineering; groundwater protection
Book titleProceedings of Advances in Computing and Technology
Page range148-153
Year2008
PublisherUniversity of East London, School of Architecture Computing and Engineering
Publication dates
Print2008
Publication process dates
Deposited08 Jun 2010
EventAdvances in Computing and Technology 2008
Web address (URL)http://www.uel.ac.uk/act/proceedings/documents/ACT08.pdf
http://hdl.handle.net/10552/782
Additional information

Citation:
Loh, E.W; Wijeyesekera, D.C. (2008) ‘Moisture Desorption Isotherms and Thermodynamic Characteristic of Prehydrated and Extruded GCL’ Proceedings of the AC&T, pp 148 -153..

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