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Incineration is currently considered to be an effective method of reducing intermediate and low-activity solid radwastes while obtaining, in the process, a product which is apparently easy to condition. However, in some cases ash solidification can pose problems. During the cementation of ash of Caorso radwastes at Studsvik (Sweden), mortar swelling during the cement setting phase and an ammonia evolution were observed. This swelling forced the mortar out of the drums and the solidified product was very porous. Similar problems were observed in other nuclear plants. This research aimed at investigating these phenomena by means of a physico-chemical characterisation of the ash with the objective of defining the best waste/cement mixtures with respect to mechanical and leaching resistance properties.

Additional information

Authors: DONATO A, ENEA, Centro Ricerche Energia Casaccia, Roma (IT);PACE A, ENEA, Centro Ricerche Energia Casaccia, Roma (IT);RICCI G, ENEA, Centro Ricerche Energia Casaccia, Roma (IT)
Bibliographic Reference: EUR 13547 EN (1991) 44 pp., FS, ECU 5
Availability: (2)
ISBN: ISBN 92-826-2740-3
Record Number: 199110989 / Last updated on: 1994-12-02
Original language: en
Available languages: en
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