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Gradation of the Radiation Shielding Integrity of the Cement Brands in Botswana |
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PP: 43-46 |
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doi:10.18576/jrna/040105
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Author(s) |
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M. Katumba,
M. Hlongwani,
V. R.K. Murty,
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Abstract |
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| A study of the radiation shielding properties of cement brands was carried out. The study established HVLs of
the different cement brands. Cements suitable for construction of concrete bunkers for photon shielding were
recommended. Three CEM I 42.5 N all-purpose cement which were the most prevalent brands in the market were chosen
i.e. PPC, Afrisam and La farge cement by trade names. The cement block samples were prepared by mixing cement and
water at a constant water to cement ratio of 0.32. The HVLs were determined using a diagnostic x-ray beams at 50 kVp
through 125 kVp at 10 mAs in a 10 cm x 10 cm field size, 100 cm SDD and the Unifors XI detector. The PPC cement gave
optimum HVLs for beams at below 110 kVp while Afrisam cement gave optimum values HVLs for the energies above 110
kVp. The most suitable for concrete construction was PPC cement for photons at 50 kVp to 110 kVp and Afrisam is most
suitable cement for applications utilizing over 110 kVp to 125 kVp. |
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