Optimization and characterization of a cemented ultimate-storage product
Abstract
The U- and Pu-containing packaging wastes can be homogeneously cemented after a washing and fragmentation process. Both finely crushed and coarsely fragmented raw wastes yield products with sufficient mechanical stability. The processability limit of the coarsely fragmented raw waste using cement paste or mortar is largely determined by the cellulose content, which is not to exceed 1.3% by weight in the end waste. Of 9 binders studied, the most corrosion-resistant products were obtained with blast-furnace slag cement, whereas poured concrete and Maxit are much less resistant in five-component brine. In the cemented product, hydrolysis of plasticizers (DOP) from plastics (PVC) occurs, leading to release of 2-ethyl-hexanol. This reaction occurs to a much lower degree with blast-furnace slag cement than with all other binders studied. The binder chosen for further tests consists of blast-furnace slag cement, concrete fluidizer and a stabilizer, and is processed at a W/C ratio of 0.43.
- Publication:
-
Optimization and characterization of a cemented ultimate-storage product Transl. into ENGLISH of NUKEM Interim Report
- Pub Date:
- December 1981
- Bibcode:
- 1981occu.rept.....B
- Keywords:
-
- Binders (Materials);
- Cements;
- Mechanical Properties;
- Packaging;
- Radioactive Wastes;
- Storage Stability;
- Cellulose;
- Corrosion Resistance;
- Mortars (Material);
- Polyvinyl Chloride;
- Slags;
- Nuclear and High-Energy Physics