International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 2, February 2017

International Journal of Science and Technology

Preliminary Investigation of Naturally Occurring Radionuclide in Some Six Representative Cement Types Commonly used in Cameroon as Building Material

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Author(s) M.M. Ndontchueng; A. Simo; E.J.M. Nguelem, R.L Njinga , J. F Beyala; D, Kryeziu
On Pages 365-371
Volume No. 3
Issue No. 10
Issue Date October, 2013
Publishing Date October, 2013
Keywords Radioactivity, Cement, Broad Energy Germanium Detector, Radiological Health Hazard Parameters.


The present study aimed at the determination of the specific activity of naturally occurring radioactive materials and the evaluation of the radiological health hazards radioactivity in twenty four cement samples presenting six cement types commonly used in Cameroon for building construction have been analyzed. A high purity germanium detector (HPGe) spectrometer was used for quantification of gamma emitting radionuclide in the cements to demonstrate the radiological health hazards. Terrestrial absorbed dose rate (D), annual effective dose equivalent (AEDE), radium equivalent activity (Raeq), external (Hex)/internal (Hin) hazard index, activity gamma (I?) and alpha index (Ia) caused by gamma emitting natural radionuclide are determined from the obtained values of 226Ra, 232Th and 40K. The calculated values of the absorbed dose rate and the indoor annual effective dose are slightly higher comparably to the recommended worldwide values. The details of the samples preparation procedure and the gamma-ray spectrometry technique are presented, together with the preliminary investigated results of specific activity of naturally occurring radionuclide chains for six representative cement type analyzed in this current work.

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