CALCULATION OF LINEAR ATTENUATION COEFFICIENTS OF A FLY ASH-BASED GEOPOLYMER MIXTURE WITH BARIUM SULPHATE USED FOR X-RAY SHIELDING PROTECTION
DOI:
https://doi.org/10.59743/jbs.v33i2.186Keywords:
fly-ash based geopolymer, shielding materialsAbstract
This work was conducted to study the properties of fly ash geopolymer (FAGP) in order to use as an alternative cement mortar (OPC) material as shielding material by adding barium sulfate (BaSO4) as additional material. The fabrication of the FAGP involved the dissolution of aluminosilicate material in a highly alkaline solution and subsequent combination with sand. The shielding properties of FAGP were enhanced with the addition of BaSO4. The FAGP was dried in an oven for one day at 60 - 70 ℃ and then cooled at room temperature for 28 days. The fabricated FAGP was subjected to elemental composition analysis using Narrow beam geometry was used to measure transmission does, the μ and attenuation percentages of the samples To obtaining the thickness of FAGP which equivalent in attenuation to the 1mm thickness of lead. The linear attenuation values were calculated from the slope for each sample. Then, the design shielding boxes were fabricated as an application for diagnostic x-ray from FAGP with (0, 5, 10, and 15% BaSO4). X-ray was used as a radiation source with 60 keV. The results showed that the attenuation coefficient with the box of FAGP with 15% BaSO4 at 60 keV has decreased the radiation to 0.4.
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Singh, N., et al., Comparative study of lead borate and bismuth lead borate glass systems as gamma-radiation shielding materials. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2004. 225(3): p. 305-309.
Hardjito, D., Studies of fly ash-based geopolymer concrete. 2005.
Medhat, M., Gamma-ray attenuation coefficients of some building materials available in Egypt. Annals of Nuclear Energy, 2009. 36(6): p. 849-852.
Salwa, M.S., et al., Review on Current Geopolymer as a Coating Material. 2013.
Davidovits, J., Mineral polymers and methods of making them. 1982, Google Patents.
Davidovits, J., Geopolymers. Journal of Thermal Analysis and calorimetry, 1991. 37(8): p. 1633-1656.
Davidovits, J. Properties of geopolymer cements. in First international conference on alkaline cements and concretes. 1994.
Xu, H. and J. Van Deventer, The geopolymerisation of alumino-silicate minerals. International Journal of Mineral Processing, 2000. 59(3): p. 247-266.
Rattanasak, U. and P. Chindaprasirt, Influence of NaOH solution on the synthesis of fly ash geopolymer. Minerals Engineering, 2009. 22(12): p. 1073-1078.
Chindaprasirt, P., T. Chareerat, and V. Sirivivatnanon, Workability and strength of coarse high calcium fly ash geopolymer. Cement and Concrete Composites, 2007. 29(3): p. 224-229.
Malhotra, V., Introduction: sustainable development and concrete technology. Concrete International, 2002. 24(7).
Bushberg, J.T., The essential physics of medical imaging. 2002: Lippincott Williams & Wilkins.
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