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Rehydroxyiation of clay minerals and hydration in ancient pottery from the ‘Land of Geshur’
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In this article, the authors investigated the rehydroxylation of clay minerals and hydration in Bronze and Iron Age pottery from the ‘Land of Geshur’ (east of the Sea of Galilee), by IR thermospectrometry.Abstract:
Rehydroxylation of clay minerals and hydration in Bronze and Iron Age pottery from the ‘Land of Geshur’ (east of the Sea of Galilee), were investigated by IR thermospectrometry. A weak OH band, which resembles those in smectite or illite, exists in most samples, but it is masked by the water bands at lower temperature. Two types of transformation of clay minerals occur during firing of raw materials, reversible and nonreversible dehydroxylation, taking place at a relatively low and high firing temperatures, respectively. Clay minerals rehydroxylate and reconstruct after relatively higher firing temperatures in noncalcareous raw materials than in calcareous ones. These processes take place after higher temperatures in cooking pots made from the former type of raw material as compared with storage and table-ware vessels made from the latter. The absorbed water in the pottery is mainly connected with the dominant X-ray amorphous matter formed by the firing process.read more
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Water Transport in Brick, Stone and Concrete
Christopher Hall,William D. Hoff +1 more
TL;DR: Porous Materials Water in Porous Materials Flow in porous materials Unsaturated Flows UnSaturated Flow in Building Physics Composite Materials Evaporation and Drying Topics in Water Transport Appendices Symbols Used Properties of Water Minerals, Salts and Solutions Other Liquids Other Data as mentioned in this paper
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Dating fired-clay ceramics using long-term power law rehydroxylation kinetics
Moira Wilson,M. A. Carter,Christopher Hall,William D. Hoff,Ceren Ince,Shaun D. Savage,Bernard McKay,Ian M. Betts +7 more
TL;DR: In this paper, the authors used a power law exponent of 1 4 to estimate the ages of fire-clay artefacts from Roman to modern dates, consistent with the theory of fractional (anomalous) single file diffusion.
Journal ArticleDOI
Using FT-IR spectroscopy for study of calcareous ancient ceramics
TL;DR: In this article, the authors used FT-IR spectroscopy for study of domestic Iron Age storage jars excavated at Tel Hadar on the eastern shore of the Sea of Galilee.
Journal ArticleDOI
Kinetics of Moisture Expansion in Fired Clay Ceramics: A ( Time ) 1 / 4 Law
TL;DR: A new expansion law is proposed, in which the expansive strain increases as (age)(1/4) approximately, which is consistent with a mechanism in which expansion arises from a diffusion-controlled rehydration reaction on a linear or low-dimension structure.
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Study and characterization of the ancient bricks of monastery of “San Filippo di Fragalà” in Frazzanò (Sicily)
Paola Cardiano,Salvatore Ioppolo,Concetta De Stefano,Antonello Pettignano,S. Sergi,Pasquale Piraino +5 more
TL;DR: In this paper, the ancient bricks of the monastery of Fragala in Frazzano, the first Basilian-Norman center in Sicily and symbol of 15 centuries of cultural life, were studied and characterized by a combination of techniques (INAA, ICP, porosimetry, HPLC, TG-DTA and XRD).
References
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The Infrared spectra of minerals
TL;DR: The use of vibrational spectroscopy as a tool in identifying mineral species and in deriving information concerning the structure, composition and reactions of minerals and mineral products is discussed in this paper.