Immobilization of Radioactive Wastes into CaTiO3 Synroc by the SHS Method
This paper researched the fabrication of perovskite (CaTiO3) synroc by self-propagating high temperature synthesis (SHS) and the characterization of the products. This synthesis process is simpler, the fabricated synroc can immobilize waste loading up to wt( 35%) SrO with satisfied physical properties (density>4.2 g•cm-3, open porosity<0.2%). The microstructure analyses by XRD and SEM/EDS show that the major phase is perovskite which well agrees with the design. It proves that SHS offer a suitable Sr-waste synroc which is favorable for geological disposal.
Zhengyi Jiang, Jingtao Han and Xianghua Liu
R. Z. Zhang et al., "Immobilization of Radioactive Wastes into CaTiO3 Synroc by the SHS Method", Advanced Materials Research, Vols. 152-153, pp. 315-319, 2011