Ageing of Eurobitum bituminised radioactive waste under gamma irradiation

Research output: Contribution to report/book/conference proceedingsIn-proceedings paper

Documents & links

Abstract

The extent of the physico-chemical processes of concern in the study on the acceptability of the Belgian Eurobitum bituminised waste for underground disposal, will depend on the degree of ageing of the bituminous matrix. Therefore, the ageing of non-radioactive simulates of Eurobitum under gamma irradiation was studied both in the presence and absence of oxygen. Chemical changes in the bitumen structure were measured in the mid-infrared region with the attenuated total reflectance infrared technique (ATR/FTIR) and evaluation of the peaks at 1700 cm‑1 (C=O) and 1600 cm‑1 (C=C). Even for the highest total absorbed doses (~800 kGy at ~150 Gy/h), effects of the irradiation in Eurobitum were found to be small to moderate and were, in any case, smaller than for samples heated for three hours at 130°C in air.

Details

Original languageEnglish
Title of host publicationSymposium Proceedings. Scientific Basis for Nuclear Waste Management XXIX
Place of PublicationWarrendale, United States
Pages689-696
Publication statusPublished - Jun 2006
EventMRS 2005. 29th International Symposium on the Scientific Basis for Nuclear Waste Management - SCK•CEN, Gent, Belgium
Duration: 12 Sep 200516 Sep 2005

Conference

ConferenceMRS 2005. 29th International Symposium on the Scientific Basis for Nuclear Waste Management
CountryBelgium
CityGent
Period2005-09-122005-09-16

Keywords

  • bituminised waste products, Eurobitum, ageing, radio-oxidation, gamma irradiation

ID: 368305