Pb-free Radiation Shielding Glass Using Coal Fly Ash


  • Watcharin Rachniyom Environmental Science Program, Faculty of Science, Burapha University, Chonburi, 20131, Thailand
  • Suparat Tuscharoen Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom, 73000, Thailand
  • Jakrapong Kaewkhao Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom, 73000, Thailand
  • Pumipat Pachana Environmental Science Program, Faculty of Science, Burapha University, Chonburi, 20131, Thailand Department of Chemistry, Faculty of Science, Burapha University, Chonburi, 20131, Thailand




effective atomic number, fly ash, half-value layer, radiation shielding, subbituminous


In this work, Pb-free shielding glass samples were prepared by the
melt quenching technique using subbituminous fly ash (SFA) composed of
xBi2O3 : (60-x)B2O3 : 10Na2O : 30SFA (where x = 10, 15, 20, 25, 30 and 35 by wt%). The samples were investigated for their physical and radiation shielding properties. The density and hardness were measured. The results showed that the density increased with the increase of Bi2O3 content. The highest value of hardness was observed for glass sample with 30 wt% of Bi2O3 concentration. The samples were investigated under 662 keV gamma ray and the results were compared with theoretical calculations. The values of the mass attenuation coefficient (μm), the atomic cross section (e) and the effective atomic number (Zeff) were found to increase with an increase of the Bi2O3 concentration and were in good agreement with the theoretical calculations. The best results for the half-value layer (HVL) were observed in the sample with 35 wt% of Bi2O3 concentration, better than the values of barite concrete. These results demonstrate the viability of using coal fly ash waste for radiation shielding glass without PbO in the glass matrices.


Lav, M.A. & Lav, A.H., Effects of Stabilization on Resilient Characteristics of Fly Ash as Pavement Material, Construction and Building Materials, 8, pp. 10-16, 2014.

Yao, Z.T., Xia, M.S., Sarker, P.K. & Chen, T., A Review of the Alumina Recovery from Coal Fly Ash, with a Focus in China, Fuel, 140, pp. 74-85, 2014.

Department of Alternative Energy Development and Efficiency, Potential of Clean Coal Technology, http://www4.dede.go.th/dede/index.php?option=com_content&view= article&id=3081:potential-of-clean-coal-technology&catid=56:2010-04-06-09-12-43&Itemid=68. (28 August 2013)

Erol, M., K1/41/4kbayrak, S. & Meriboyu, A.E., Characterization of Coal Fly Ash for Possible Utilization in Glass Production, Fuel, 86(5), pp. 706-714, 2007.

Kirdsiri, K., Kaewkhao, J., Chanthima, N. & Limsuwan, P., Comparative Study of Silicate Glasses containing Bi2O3, PbO and BaO: Radiation Shielding and Optical Properties, Annals of Nuclear Energy, 38, pp. 1438-1441, 2011.

Yasaka, P., Pattanaboonmee, N., Kim, H.J., Limkitjaroenporn, P. & Keawkhao, J., Gamma Radiation Shielding and Optical Properties Measurements of Zinc Bismuth Borate Glasses, Annals of Nuclear Energy, 68, pp. 4-9, 2014.

Singh, K.J., Kaur, S. & Kaundal, R.S., Comparative Study of Gamma Ray Shielding and Some Properties of PbO-SiO2-Al2O3 and Bi2O3-SiO2-Al2O3 Glass Systems, Radiation Physics and Chemistry, 96, pp. 135-157, 2014.

Singh, V.P., Badiger, N.M., Chanthima, N. & Keawkhao, J., Evaluation of Gamma-Ray Exposure Buildup Factors and Neutron Shielding for Bismuth Borosilicate Glasses, Physics and Chemistry, 98, pp. 14-21, 2014.

Marzouk, M.A., El Batal, F.H., Eisa, W.H. & Ghoneim, N.A., Comparative Spectral and Shielding Studies of Binary Borate Glasses with the Heavy Metal Oxides SrO, CdO, BaO, PbO or Bi2O3 Before and After Gamma Irradiation, Journal of Non-Crystalline Solids, 387, pp. 156-160, 2014.

Kaewkhao, J., Pokaipisit, A. & Limsuwan, P., Study on Borate Glass System Containing with Bi2O3 and BaO for Gamma-Rays Shielding Materials: Comparison with PbO, Journal of Nuclear Materials, 399(1), pp. 38-40, 2010.

Tuscharoea, S., Kaewkhao, J., Limsuwana, P., Chewpraditkula, W., Development of BaO:B2O3:Flyash Glass System for Gamma-rays shielding Materials, Nuclear Science and Technology, 1, pp. 110-113, 2011.

Kaewkhao, J., Interaction of 662 keV Gamma-rays with Bismuth-based Glass Matrices, Journal of the Korean Physical Society, 59(2), pp. 661-665, 2011.

Tuscharoea, S., Kaewkhao, J., Limsuwana, P., Chewpraditkula, W., Structural, Optical and Radiation Shielding Properties of BaO-B2O3-Rice Husk Ash Glasses, Procedia Engineering, 32, pp. 734-739, 2012.

Park, J.S., Tanigushi, S. & Park, Y.J., Alkali Borosilicate Glass by Fly Ash from a Coal-Fired Power Plant, Chemosphere, 74(2), pp. 320-324, 2009.

Singh, K., Kaur, R., Vadana, R. & Kumar, V., Study of Effective Atomic Numbers and Mass Attenuation Coefficients in Some Compounds, Radiation Physics and Chemistry, 47(4), pp. 535-541, 1996.

Singh, K., Singh, H., Sharma, V., Nathuram, R., Khanna, A., Kumar, R., Bhatti, S.S. & Sahota, H.S., Gamma-ray Attenuation Coefficients in Bismuth Borate Glasses, Nuclear Instruments and Methods in Physics Research Section B, 194(1), pp. 1-6, 2002.

Singh, N., Singh, K.J., Singh, K.& Singh, H., Gamma-Ray Attenuation Studies of PbO-BaO-B2O3 Glass System, Radiation Measurements, 41(1), pp. 84-88, 2006.

Kaewkhao, J., Laopaiboon, J. & Chewpraditkul, W., Determination of Effective Atomic Numbers and Effective Electron Densities of Cu/Zn Alloy, Journal of Quantitative Spectroscopy and Radiative Transfer, 109(7), pp. 1260-1265, 2008.

Kaewjang, S., Maghanemi, U., Kim, H.J., Limkitjaroenporn, P. & Kaewkhao, J., New Gadolinium Based Glasses for Gamma-Rays Shielding Materials, Nuclear Engineering and Design, 280, pp. 21-26, 2014.