Zinātniskās darbības atbalsta sistēma
Latviešu English

Publikācija: Impact of Biodeterioration on Structure and Composition of Waterlogged Foundation Piles from Riga Cathedral (1211 CE)

Publikācijas veids Zinātniskais raksts, kas indeksēts Web of science un/vai Scopus datu bāzē
Pamatdarbībai piesaistītais finansējums Valsts budžeta finansējums izglītībai
Aizstāvēšana: ,
Publikācijas valoda English (en)
Nosaukums oriģinālvalodā Impact of Biodeterioration on Structure and Composition of Waterlogged Foundation Piles from Riga Cathedral (1211 CE), Latvia
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.5. Materiālzinātne
Pētniecības platforma Neviena
Autori Ilze Irbe
Oskars Bikovens
Velta Fridrihsone
Mārcis Dzenis
Atslēgas vārdi Biodeterioration Heritage Archaeological wood Microorganisms Foundation piles
Anotācija In this paper, a diagnostic evaluation of the state of the art of archaeological waterlogged foundation piles in Riga Cathedral (1211 CE) was carried out. Microscopic, chemical and instrumental methods were applied to study the impact of deterioration of piles leading to the deformations of the Cathedral building. Severe biodeterioration by microorganisms in the majority of pile samples was determined. Chemical analyses showed an extensive depletion of hemicellulose and cellulose sugars while lignin seemed to be unaffected. Restricted degradation of hemicellulose sugars –arabinose and galactose – was characteristic of bacterial degradation of wood. FTIR spectroscopy proved itself as a quick and efficient method for determination of changes in wood components in foundation piles in comparison with chemical method. The increased ash content (up to 70%) in waterlogged wood consisted of deposited salts, oxides and other inorganic compounds. The X-ray diffraction method determined the main inorganic impurities, including calcite, quartz, sodium magnesium silicate and muscovite.
DOI: 10.1016/j.jasrep.2018.11.002
Hipersaite: https://www.sciencedirect.com/science/article/pii/S2352409X18304279?via%3Dihub 
Atsauce Irbe, I., Bikovens, O., Fridrihsone, V., Dzenis, M. Impact of Biodeterioration on Structure and Composition of Waterlogged Foundation Piles from Riga Cathedral (1211 CE), Latvia. Journal of Archaeological Science: Reports, 2019, No.1, 196.-202.lpp. ISSN 2352-409X. Pieejams: doi:10.1016/j.jasrep.2018.11.002
Papildinformācija Citējamību skaits:
ID 28269