Abstract
Buildings have a large urban footprint, are one of the greatest consumers of resources and raw materials, and are responsible for 40% of the global energy usage and contribute to as much as 33% of the greenhouse gas emissions worldwide. Waste wood, ground granulated blast furnace slag, and fly ash are an important source of waste that can be recycled to make wood-geopolymer concrete composite building material helping to better achieve a circular economy. The wood-geopolymer composite blocks have added properties enabling thermal, acoustic, and humidity regulation within buildings that reduce energy consumption. This study has shown that recycling partially decontaminated copper-chrome-arsenic (CCA) treated waste timber may have slightly better mechanical properties than waste virgin timber. Different amounts of wood in the wood-geopolymer composites can be used for load and non-load-bearing applications. The study has also shown that the use of less than 40% by weight of partially decontaminated CCA-treated timber in the wood-geopolymer composite blocks is able to meet the 5 mg/litre leachate limit for a wide variety of environmental leachate tests.
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Jong-Leng Liow, Amar Khennane, Firesenay Zerabruk Gigar, Elmira Katoozi contributed equally to this work.
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Liow, JL., Khennane, A., Gigar, F.Z., Katoozi, E. (2024). Recycled Wood-Geopolymer Concrete Blocks as Sustainable Material. In: TMS 2024 153rd Annual Meeting & Exhibition Supplemental Proceedings. TMS 2024. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50349-8_137
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