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Straw in Clay Bricks and Plasters—Can We Use Its Molecular Decay for Dating Purposes?

Dating of clay bricks (adobe) and plasters is a relevant topic not only for building historians in the Pannonian region. Especially in vernacular architecture in this region, clay with straw amendments is a dominant construction material. The paper presents the potential of the molecular decay of th...

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Autores principales: Tintner, Johannes, Roth, Kimberly, Ottner, Franz, Syrová-Anýžová, Zuzana, Žabičková, Ivana, Wriessnig, Karin, Meingast, Roland, Feiglstorfer, Hubert
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7144354/
https://www.ncbi.nlm.nih.gov/pubmed/32244982
http://dx.doi.org/10.3390/molecules25061419
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author Tintner, Johannes
Roth, Kimberly
Ottner, Franz
Syrová-Anýžová, Zuzana
Žabičková, Ivana
Wriessnig, Karin
Meingast, Roland
Feiglstorfer, Hubert
author_facet Tintner, Johannes
Roth, Kimberly
Ottner, Franz
Syrová-Anýžová, Zuzana
Žabičková, Ivana
Wriessnig, Karin
Meingast, Roland
Feiglstorfer, Hubert
author_sort Tintner, Johannes
collection PubMed
description Dating of clay bricks (adobe) and plasters is a relevant topic not only for building historians in the Pannonian region. Especially in vernacular architecture in this region, clay with straw amendments is a dominant construction material. The paper presents the potential of the molecular decay of these amendments to establish prediction tools for age based on infrared spectroscopic measurements. Preliminary results revealed spectral differences between the different plant parts, especially culms, nodes, and ear spindles. Based on these results, a first prediction model is presented including 14 historic samples. The coefficient of determination for the validation reached 62.2%, the (RMSE) root mean squared error amounted to 93 years. Taking the limited sample amount and the high material heterogeneity into account, this result can be seen as a promising output. Accordingly, sample size should be increased to a minimum of 100 objects and separate models for the different plant parts should be established.
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spelling pubmed-71443542020-04-13 Straw in Clay Bricks and Plasters—Can We Use Its Molecular Decay for Dating Purposes? Tintner, Johannes Roth, Kimberly Ottner, Franz Syrová-Anýžová, Zuzana Žabičková, Ivana Wriessnig, Karin Meingast, Roland Feiglstorfer, Hubert Molecules Article Dating of clay bricks (adobe) and plasters is a relevant topic not only for building historians in the Pannonian region. Especially in vernacular architecture in this region, clay with straw amendments is a dominant construction material. The paper presents the potential of the molecular decay of these amendments to establish prediction tools for age based on infrared spectroscopic measurements. Preliminary results revealed spectral differences between the different plant parts, especially culms, nodes, and ear spindles. Based on these results, a first prediction model is presented including 14 historic samples. The coefficient of determination for the validation reached 62.2%, the (RMSE) root mean squared error amounted to 93 years. Taking the limited sample amount and the high material heterogeneity into account, this result can be seen as a promising output. Accordingly, sample size should be increased to a minimum of 100 objects and separate models for the different plant parts should be established. MDPI 2020-03-20 /pmc/articles/PMC7144354/ /pubmed/32244982 http://dx.doi.org/10.3390/molecules25061419 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tintner, Johannes
Roth, Kimberly
Ottner, Franz
Syrová-Anýžová, Zuzana
Žabičková, Ivana
Wriessnig, Karin
Meingast, Roland
Feiglstorfer, Hubert
Straw in Clay Bricks and Plasters—Can We Use Its Molecular Decay for Dating Purposes?
title Straw in Clay Bricks and Plasters—Can We Use Its Molecular Decay for Dating Purposes?
title_full Straw in Clay Bricks and Plasters—Can We Use Its Molecular Decay for Dating Purposes?
title_fullStr Straw in Clay Bricks and Plasters—Can We Use Its Molecular Decay for Dating Purposes?
title_full_unstemmed Straw in Clay Bricks and Plasters—Can We Use Its Molecular Decay for Dating Purposes?
title_short Straw in Clay Bricks and Plasters—Can We Use Its Molecular Decay for Dating Purposes?
title_sort straw in clay bricks and plasters—can we use its molecular decay for dating purposes?
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7144354/
https://www.ncbi.nlm.nih.gov/pubmed/32244982
http://dx.doi.org/10.3390/molecules25061419
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