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Influence of gamma ray irradiation on metakaolin based sodium geopolymer

Authors
Journal
Journal of Nuclear Materials
0022-3115
Publisher
Elsevier
Volume
443
Identifiers
DOI: 10.1016/j.jnucmat.2013.06.044

Abstract

Abstract Effects of gamma irradiation on metakaolin based Na-geopolymer have been investigated by external irradiation. The experiments were carried out in a gamma irradiator with 60Co sources up to 1000kGy. Various Na-geopolymer with three H2O/Na2O ratios have been studied in terms of hydrogen radiolytic yield. The results show that hydrogen production increases linearly with water content. Gamma irradiation effects on Na-geopolymer microstructure have been investigated with porosity measurements and X-ray pair distribution function analysis. A change of pore size distribution and a structural relaxation have been found after gamma ray irradiation.

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