Bibliografisk noteFunding Information:
This study was funded by the Independent Research Fund Denmark grant no DFF-6121-00003.
The authors acknowledge the Independent Research Fund Denmark who supported this work. S. H. Smedemark also thanks Fraunhofer WKI, Department of Material Analysis and Indoor Chemistry, Germany, for hosting a research visit as well as the Technical University in Denmark, Department of Civil Engineering, and the National Museum in Denmark, Department for Marine Archaeology and Material Science, for making their laboratory equipment available.
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