Atomic Energy

, Volume 109, Issue 4, pp 278–284 | Cite as

Incorporation of bottoms from nuclear power plants into a matrix based on portland cement and silicic additives

  • O. A. Kononenko
  • V. M. Gelis
  • V. V. Milyutin

The solidification of partially evaporated bottoms of RBMK and VVER with salt concentration 500–650 g/liter by compositional binders consisting of Portland cement and silicic additives – aerosil, microsilica, opoka, silicic acid, liquid glass, and diatomite is examined. The additions were used to obtain matrices that satisfy the requirements of safe storage of cemented radwastes. The partition coefficients of 137Cs in partially evaporated bottoms are determined for all additives studied. The most effective additive for solidification of partially evaporated bottoms of VVER is diatomite. Matrices with diatomite have strength 50–81 kg/cm2, the rate of leaching of 137Cs ~ 10–3–10–4 g/(cm2·day) and the fill with respect to salts reaches 20.9 wt.%. On the solidification of partially evaporated RBMK bottoms the most effective hardening additives are aerosil and microsilica and the most effective sorbing additives are bentonite, opoka, and diatomite. The matrices so obtained have strength 59–93 kg/cm2, 137Cs leach rate ~ 10–3–10–4 g/(cm2·day) and contain to 25.1 wt.% salts.


Bentonite Nuclear Power Plant Portland Cement Silicic Acid Diatomite 
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Copyright information

© Springer Science+Business Media, Inc. 2011

Authors and Affiliations

  • O. A. Kononenko
    • 1
  • V. M. Gelis
    • 1
  • V. V. Milyutin
    • 1
  1. 1.Frumkin Institute of Physical Chemistry and ElectrochemistryRussian Academy of Sciences (IFKhE RAN)MoscowRussia

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