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- W2352809569 abstract "Simulated radioactive incineration ash (SRIA) was solidified by alkali-activated slag composite cement (AASCC) modified by metakaolin,zeolite,and polymer emulsion powder. The results show that the performance of solidified waste form containing 40% SRIA meets the requirements of GB 14569.1—93. The lowest leaching rate of Cs+ on 42nd days reaches 1.32×10-4 cm/d (GB 7023—86,25 ℃),cumulative leach percentage is only 0.041 cm. Also,the lowest 28 days compressive strength of solidified waste form is 45.6 MPa,and later strength growth is still high. The fast setting characteristic of AASCC overcomes effectively the disadvantageous influence caused by some components in SRIA on hydration of cement. The compressive strength of solidified waste is enhanced remarkably,and the ability of immobilizing radionuclide ions is also improved. This is mainly due to synergistic effect between metakaolin and zeolite. Polymer modification also improves the performance of solidified waste form significantly. The three-dimensional polymer network structure formed by emulsion powder in solidified waste form enhances its toughness and impact resistance,and the durability is improved by reducing interconnected pores and optimizing pore structure. However,it also results in reduction in compressive strength. Thus,it is concluded that the suitable dosage percentage is 5%." @default.
- W2352809569 created "2016-06-24" @default.
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- W2352809569 date "2010-01-01" @default.
- W2352809569 modified "2023-10-02" @default.
- W2352809569 title "Solidification of Simulated Radioactive Incineration Ash by Alkali-activated Slag Composite Cement" @default.
- W2352809569 hasPublicationYear "2010" @default.
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