Efficiency of alkali activated hybrid cements for immobilization of low-level radioactive anion-exchange resins

Authors

  • Pavlo Kryvenko Kyiv national university of construction and architecture Povitroflotskii ave., 37, Kyiv, Ukraine, 03037, Ukraine https://orcid.org/0000-0001-7697-2437
  • Hailin Cao Advanced materials Research Institute The Tenth Kejinan Road, High-tech Zone, Nanshan District, Shenzhen, PR. China, 518057, China
  • Oleg Petropavlovskyi Kyiv national university of construction and architecture Povitroflotskii ave., 37, Kyiv, Ukraine, 03037, Ukraine https://orcid.org/0000-0002-3381-1411
  • Luqian Weng Advanced materials Research Institute The Tenth Kejinan Road, High-tech Zone, Nanshan District, Shenzhen, PR. China, 518057, China

DOI:

https://doi.org/10.15587/1729-4061.2016.59488

Keywords:

cementation, low­level radioactive wastes, immobilization, anion­active resins

Abstract

Immobilization by cementation of anion­exchange resins is closely associated with high pH­values of a cement matrix as a result of compositional build­up of the cements used as binding agents. At high pH values the anion­exchange resins with acid reaction (pH<5) start recycling in a body of the hardening cement compound resulting in its destruction. The paper covers the results on efficiency of the hybrid alkali activated cements as binding agents which at the initial stage of hydration have high pH values of the cement stone (pH>12), thus providing a required strength gain. Later, pH values tend to lower (pH<10), thus retarding the process of resin recycling to the values which do not affect negatively durability of the resulted solidified waste forms. The examples of hybrid alkali activated cements compositional build up are provided together with physico­mechanical properties of the resulted solidified waste forms. These results show that these properties are superior to those specified in the standards of the P. R. China, these are: GB 7023 and GB 14569.

Author Biographies

Pavlo Kryvenko, Kyiv national university of construction and architecture Povitroflotskii ave., 37, Kyiv, Ukraine, 03037

Doctor of Technical Sciences, Professor

V. D. Glukhovskii Scientific research institute for binders and materials

Hailin Cao, Advanced materials Research Institute The Tenth Kejinan Road, High-tech Zone, Nanshan District, Shenzhen, PR. China, 518057

PhD, Professor

Shenzhen Academy of Aerospace Technology

Oleg Petropavlovskyi, Kyiv national university of construction and architecture Povitroflotskii ave., 37, Kyiv, Ukraine, 03037

PhD, Senior Researcher

V. D. Glukhovskii Scientific research institute for binders and materials

Luqian Weng, Advanced materials Research Institute The Tenth Kejinan Road, High-tech Zone, Nanshan District, Shenzhen, PR. China, 518057

PhD, Professor

Shenzhen Academy of Aerospace Technology

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Published

2016-10-30

How to Cite

Kryvenko, P., Cao, H., Petropavlovskyi, O., & Weng, L. (2016). Efficiency of alkali activated hybrid cements for immobilization of low-level radioactive anion-exchange resins. Eastern-European Journal of Enterprise Technologies, 5(10 (83), 38–43. https://doi.org/10.15587/1729-4061.2016.59488

Issue

Vol. 5 No. 10 (83) (2016): Ecology

Section

Ecology

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Copyright (c) 2016 Pavlo Krivenko, Hailin Cao, Oleg Petropavlovskyi, Luqian Weng

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