Benefits of applying X-ray computed tomography in bentonite based material research focussed on geological disposal of radioactive waste.

ABSTRACT: Bentonite-based geomaterials are included in the designs of geological repository planning in most countries, especially in high-level radioactive waste disposal. Physical integrity of the bentonite sealant is key in assuring its hydraulic and retention properties, which affect the long-term performance of the repositories. Examination of the internal textures and structures of bentonite has been challenging until recently. Here, X-ray computed tomography (XCT) is applied to improve the textural and structural characterization of natural and man-made bentonite samples. Based on these initial analyses, clear benefits have been identified compared with conventional bentonite research methods. First, applying XCT prior to destructive analytical methods provides means to distinguish secondary

SUBMITTER: Reijonen HM 

PROVIDER: S-EPMC7524814 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature