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Archaeological ceramic amphorae from underwater marine environments: Influence of firing temperature on salt crystallization decay

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López-Arce Martínez, Paula and Zornoza-Indart, Ainara and Gómez Villalba, Luz Stella and Pérez-Monserrat, Elena Mercedes and Álvarez de Buergo, Mónica and Vivar, G. and Fort González, Rafael (2013) Archaeological ceramic amphorae from underwater marine environments: Influence of firing temperature on salt crystallization decay. Journal of the European Ceramic Society, 33 . pp. 2031-2042. ISSN 0955-2219

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Official URL: https://www.journals.elsevier.com/journal-of-the-european-ceramic-society/



Abstract

Non-desalinated and desalinated fragments of Iberian, Italic and Tarraconensian amphorae sherds, found in different underwater marine environments, were compared to determine the decay caused by salt crystallization. Polarizing light and fluorescence optical microscopy, scanning electron microscopy coupled to energy dispersive X-ray spectroscopy, X-ray diffraction, ion chromatography and mercury intrusion porosimetry tests were conducted on the samples. Non-desalinated samples exhibit a variety of signs of degradation, especially those samples fired at lower temperature. Sherds fired at higher temperatures have a lower surface area and less connected porosity, which entail a lower absorption of soluble salts containing water and eventually less decay than those fired at lower temperatures. The composition and texture reached with the firing temperature is a key factor on salt crystallization decay and hence on the durability of these artefacts. This should be taken into account during desalination procedures that have to be optimized in order to be successful.


Item Type:Article
Uncontrolled Keywords:Amphorae; Salt crystallization; Decay; Firing temperature; Underwater ceramics
Subjects:Sciences > Geology
Sciences > Geology > Petrology
ID Code:47957
Deposited On:07 Jun 2018 07:37
Last Modified:07 Jun 2018 08:06

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