Abstract
Gamma radiation shielding and liquid permeability coefficient of baked and unbaked kaolin powder were experimentally and theoretically investigated. A NaI(Tl) detector was used to measure attenuation properties of the samples. The experimental values for the linear coefficient were validated by theoretical values using WinXCOM software. The results established that unbaked kaolin with density 2.65 g/cm3 yielded highest mass attenuation coefficients of 0.0736 cm2/g, 0.0561 cm2/g and 0.0527 cm2/g for 661.7, 1173.2 and 1332.5 keV respectively and liquid permeability coefficient of 2.33 x 10 -12 m/s. The study concludes that compacted unbaked kaolin be considered a valid alternative for radiation shielding due to its low liquid permeability coefficient for liquid radioactive waste management.
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