EFFECT OF GAMMA RAY ENERGIES an‎d ADDITION OF IRON SLAG BY WEIGHT TO PORTLAND CEMENTS ON MASS ATTENUATION COEFFICIENT

attenuation coefficient experimentally in addition to theoretically by using X-Com program (Version3.1), of Portland cement without and with different percentages of iron slag by weight (5%, 15%, 25%, 35%, and 45%).Measurements were carried out using a collimated beam of gamma ray from point sources (Co-60 , Cs-137 , and Na-22) , and sodium iodide (1.5^X1.5^) crystal with cassy – gamma ray spectrometer . From the experimental results, it was found that the mass attenuation coefficients have been increased with increasing the addition of iron slag, in addition the theoretical calculation of mass attenuation coefficient. It is also found that there are deviation between experimental values and theoretical calculation for all cement samples this is due to the experimental errors.