Abstract
The dependence of the total leach rate of monoliths with deionized water at 90°? on the keeping time (MCC-1 test) was measured. The monoliths were formed by cold pressing (25°C, 500 MPa, 2 min) of an air-dry powder of synthetic calcium aluminosilicate (SCAS) with added 10, 20, or 30 wt % simulated radioactive waste (SRW) of the composition typical of radioactive and nonradioactive wastes from a closed nuclear cycle. The leach rate of the SCAS-SRW monolith is 6.7 × 10-7, 7.2 × 10-7, and 8.3 × 10-7 g cm-2 day-1 at an SRW content of 10, 20, and 30 wt %, respectively.
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