Abstract
The gamma ray shielding properties of cement paste containing ilmenite and barite (BaSO4) at different concentration were investigated using beam transmission method for 59.5 keV gamma ray energy of 241Am radioactive isotopes by using NaI(Tl) scintillation detector. The mass attenuation coefficients (μm) of these shielding materials were calculated. It was found that the mass attenuation coefficients increase with increasing of ilmenite and barite content up to a value of 60% by weight. The highest value of μm was 0.425 ± 0.003 cm2/g for cement paste containing ilmenite and 1.598 ± 0.039 cm2/g for the cement paste containing barite. The mass attenuation coefficient values were compared between cement pasted containing ilmenite and barite. The result show that cement paste containing barite showed good gamma ray shielding performances than that for the cement paste containing ilmenite.
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