A treatment to improve the reaction to fire of wood is the wood mineralization. Besides the reaction to fire of the mineralized wood, other mechanical and physical properties are less investigated. In this study, beech and oak were treated in a 2-step mineralization process to obtain calcium oxalate mineralized wood. The 2-step mineralization process is carried out by impregnating two salts diluted in water into the wood, consecutively. Two formulations were applied. For Formulation 1, potassium oxalate and calcium acetate and for Formulation 2 potassium oxalate and calcium chloride were used. Aim of the study is to investigate the impact of the treatments and in combination of the moisture on some selected properties of the mineralized wood. These properties are the swelling due to the mineralization treatment, the Brinell hardness and the volatile organic compounds emissions. The 2-step mineralization treatments increased the moisture adsorption of wood. However, the removal of unreacted precursors due to leaching provides a material with comparable moisture dynamics to untreated wood. Swelling, hardness and volatile organic compounds emissions are decreased by the mineralization. However, leaching of the reaction by-products leads to a material with comparable properties to those of untreated wood.

中文翻译：

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水分对盐处理和两步矿化木材的影响

改善木材对火反应的一种处理方法是木材矿化。除了矿化木材对火的反应外，其他机械和物理特性研究较少。在这项研究中，山毛榉和橡木经过两步矿化工艺处理，以获得草酸钙矿化木材。两步矿化过程是通过将两种稀释在水中的盐连续浸渍到木材中来进行的。应用了两种制剂。对于配方 1，使用草酸钾和乙酸钙，对于配方 2，使用草酸钾和氯化钙。该研究的目的是调查处理和水分组合对矿化木材的某些选定特性的影响。这些特性是由于矿化处理引起的膨胀，布氏硬度和挥发性有机物排放量。两步矿化处理增加了木材的吸湿性。然而，由于浸出而去除未反应的前体提供了一种具有与未处理木材相当的水分动力学的材料。矿化降低了溶胀、硬度和挥发性有机化合物的排放。然而，反应副产物的浸出导致材料具有与未处理木材相当的性能。