علي عبد الحميداوي ( أستاذ )
كلية العلوم - الفيزياء
[email protected]
Evaluation of Natural Radioactivity Levels for Local and Import of Cement in Iraq
بحث النوع:
علوم التخصص العام:
Ali A. Abojassim اسم الناشر:
Mohammed H. Al-Taweel Talib A. Abdulwahid اسماء المساعدين:
International Journal of Scientific & Engineering Research الجهة الناشرة:
ISSN 2229-5518 IJSER © 2014  
2014 سنة النشر:


Cement samples were collected from Iraq market. Radioactivity was measured using (NaI)Tl detector, specific activity levels due to 226Ra, 232Th and 40K were measured in 11 cement samples. The average activity concentration Bq/Kg in the collected cement samples were found the range from (17.027±4.609) to (95.436±5.565) Bq/Kg with an average value of (40.49391±3.09627) Bq/Kg for226Ra, 232Th specific activities range from (2.303 ±0.319) to (8.8159±0.366) Bq/Kg with an average of (4.79±0.3455) Bq/Kg and 40K specific activity range from (84.135±5.387) to (389.436±8.364) Bq/Kg with an average value of (275.8±5.763) Bq/Kg . The average value of the radium equivalent was found (68.21907) Bg/Kg, while the average value of the absorbed dose in air, external hazard index and internal hazard index were found (32.9866) nGy/h, (0.2937) and (0.184298) respectively. The results were compared with international recommended values and found to be with in the international level.