Abstract
Our article focuses on wetland archeological sites that are subjected to one dimensional compression by the placement of a soil body for the construction of a line infrastructure or a landfill. We study the resistance to mechanical loading of ecofacts that are often investigated in archeological prospection works: charred and non charred plant remains and shells. We conducted one dimensional compression tests on assemblies of ecofacts, sand samples seeded manually with ecofacts and natural soils rich in ecofacts and used X-ray micro-tomography to evaluate the integrity of the ecofacts as function of loading. We assumed that fragmentation of ecofacts results in a loss of archeological value if particles become too small to be recovered. The ecofacts tested so far are unlikely to get crushed when included in an archeological soil above which a sand embankment of 1 to 10 m height is constructed. Some might however be deformed, flattened and re-aligned.
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Huisman DJ, Bouwmeester J, de Lange G, van der Linden Th, Mauro G, Ngan-Tillard DJM, Groenendijk M, de Ridder T, van Rooijen C, Roorda I, Schmutzhart D, Stoevelaar R (2011) De invloed van bouwwerkzaamheden op archeologische vindplaatsen, Rijksdienst voor het Cultureel Erfgoed, www.cultureelerfgoed.nl/bouwen-en-archeologie
Ngan-Tillard DJM, Dijkstra J, Verwaal W, Mulder A, Huisman DJ, Müller A (under submission) Under pressure: a laboratory investigation into the effects of mechanical loading on charred organic matter in archaeological sites
Tarplee MFV, van der Meer JJM, Davis GR (2011) The 3D microscopic ‘signature’ of strain within glacial sediments revealed using X-ray computed microtomography. Q Sci Rev 30:3501–3532
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Ngan-Tillard, D., Verwaal, W., Mulder, A., Huisman, H., Muller, A. (2015). Resistance of Buried Archeological Site to One-dimensional Mechanical Loading. In: Lollino, G., Giordan, D., Marunteanu, C., Christaras, B., Yoshinori, I., Margottini, C. (eds) Engineering Geology for Society and Territory - Volume 8. Springer, Cham. https://doi.org/10.1007/978-3-319-09408-3_15
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DOI: https://doi.org/10.1007/978-3-319-09408-3_15
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