Drying characteristic of clays has been revisited and a mathematical model to predictmoisture change has been developed and is presented in this paper. The development of themathematical model has allowed for the factors controlling the moisture movement within the clay fora range of temperature, relative humidity environments, and varying properties of clay composite.Strong correlations between aforesaid parameter and drying characteristics were observed and arediscussed in detail. In addition, an argument is presented for the superiority of the drying-rate test incurrent laboratory procedures for determining the moisture retention in comparison with moistureextraction under ‘on site’ conditions.
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