Journal
STUDIES IN CONSERVATION
Volume 55, Issue 2, Pages 95-106Publisher
INT INST CONSERVATION HISTORIC ARTISTIC WORKS
DOI: 10.1179/sic.2010.55.2.95
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The examination of archaeological objects lifted in blocks of soil is very time-consuming; both this fact and the array of findings make it imperative to find new techniques of analysis and documentation to ensure archaeological interpretation. Computed tomography of such blocks of soil could be a non-destructive alternative to conventional methods. In the present study, the use of 3D computed tomography with X-rays (XCT) and neutrons (NCT) was reviewed and compared with conventional radiography and the manual unearthing and documentation of the objects. In almost every case it was possible to resolve all relevant archaeological questions by XCT In some special cases it was not possible to visualize all manic materials. In contrast to XCT, NCT which is very sensitive to hydrogen, visualizes organic materials much better than X-rays. On the other hand the high water content in the plaster and soil around the objects caused some problems because of this sensitivity to hydrogen. However, very good results were obtained with NCT when applied to already separated single metal objects with organic remains on their surface.
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