Journal of Siberian Federal University. Engineering & Technologies: Research of the Reinforcing Fillers Infl uence on Mechanical Properties of the Cement Compound

Journal of Siberian Federal University. Engineering & Technologies / Research of the Reinforcing Fillers Infl uence on Mechanical Properties of the Cement Compound

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Issue: Journal of Siberian Federal University. Engineering & Technologies. 2018 11 (5)
Authors: Prikhodov, Dmitriy A.; Nikiforova, Eleonora M.; Shimanskiy, Alexander F.
Contact information: Prikhodov, Dmitriy A.: Radiochemical plant Mining and Chemical Combine 53 Lenin Str., Zheleznogorsk, 662972, Russia; Siberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia; ; Nikiforova, Eleonora M.: Siberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia; Shimanskiy, Alexander F.: Siberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia
Keywords: radioactive waste; cement compound; multilayered carbon nanotubes; aerosil
Abstract: Long-term and safe management of radioactive wastes, that was formed as a result of implementation of nuclear weapon programs, still remains a key problem of the nuclear energetics. The technology based on the admixture of liquid radioactive wastes in inorganic hydraulic binders (cementation process) has a number of cogent advantages: the process is of low-temperature, it proceeds without formation of gaseous radioactive wastes and the obtained cement compound provides the safety storage for a long time (more than 106 years). For the purpose to increase the degree of the cement compound fi lling with the liquid radioactive wastes, the possibility to apply reinforcing fi llers was researched, this fi llers are multilayered carbon nanotubes (MCNT) and pyrogenic silica (aerosil). It has been revealed that the proportion of MCNT should not exceed 1.5% by weight of the cement content and the aerosil proportion should not exceed 0.5% of the binder weight. The maximal positive eff ect of admixture of MCNT to the compounds composition is achieved by injecting them with mixing water that contain 0.44% by mass of surface-active substances (SAS)
Pages: 567-577
Paper at repository of SibFU: https://elib.sfu-kras.ru/handle/2311/71591

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