Because of the different properties and advantages of wood and inorganic materials, the combination of both can bear an improved product. There are many ways how these two material classes can be combined, one of them being the in-situ synthesis of minerals inside of the wood1. The synthesis of calcium carbonate (CaCO3) in wood (for example through the reaction of calcium chloride (CaCl2) with sodium hydrogen carbonate) leads to improved flame resistance, as well as partly improved mechanical properties2–5. Similar results were obtained for the in-situ synthesis of other minerals, such as amongst others calcium oxalate1,6. Gypsum is a widely used building material, known for its excellent flame resistance, processability, and availability7. Despite this, the synthesis of gypsum in wood has, to the authors knowledge, not been discussed in literature. Herein, the synthesis of gypsum in wood samples and first analysis of the wood samples are presented.
Keywords: Gypsum, Wood modification, Mineralized wood
Authors
Johannes Karthäuser
Georg August University of Goettingen, Germany
Georg T Bechstein
Georg August University of Goettingen, Germany
Salomé Raskop
Georg August University of Goettingen, Germany
Holger Militz
Georg August University of Goettingen, Germany
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