Drying Kinetic of Prehydrated and Extruded Clay Mat

Loh, E.W.K. and Wijeyesekera, D.Chitral (2009) ‘Drying Kinetic of Prehydrated and Extruded Clay Mat’, Proceedings of the AC&T, pp. 95-101.

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Abstract

The isothermal drying of prehydrated and extruded clay mat was investigated on a laboratory scale over a temperature and relative humidity range from 20°C to 40°C and 15% to 70% respectively. Two sets of polymer enhanced clay mats were used in this study. By measuring the mass loss of the samples during the isothermal drying process basis dependencies necessary to describe the kinetic drying process was obtained. The most commonly used model, Page, Wang & Singh, Henderson & Pabis and Thin layer equation were used to fit experimental data using a nonlinear regression analysis. The fit quality of the proposed model was evaluated by using the standard error of estimate, relative percent error and coefficient of correlation. Results probed that the Page model was more appropriated to predict prehydrated and extruded clay mat for the range of temperatures and relative humidity studied. Applied model analysis enabled evaluation of the main transport properties: drying constant, drying rate, effective diffusion coefficient and exponential model parameter. It was found that the drying condition and type of polymer incorporated in the clay mat strongly influenced the drying kinetic and transport parameters.

Item Type: Conference or Event Item (Paper)
Additional Information: Citation: Loh, E.W.K. and Wijeyesekera, D.C. (2009) ‘Drying Kinetic of Prehydrated and Extruded Clay Mat’ Proceedings of the AC&T, pp. 95-101..
Divisions: Schools > Architecture Computing and Engineering, School of
Depositing User: Mr Stephen Grace
Date Deposited: 07 Jun 2010 15:04
Last Modified: 27 Sep 2012 11:59
URI: http://hdl.handle.net/10552/779

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