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Recycling sawmilling wood chips, biomass combustion residues, and tyre fibres into cement-bonded composites: Properties of composites and life cycle analysis
Linnaeus University, Sweden.
SLU Swedish University of Agricultural Sciences, Sweden.
Chalmers University of Technology, Sweden.
RISE Research Institutes of Sweden, Bioeconomy and Health, Material and Surface Design.ORCID iD: 0000-0002-9585-1961
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2021 (English)In: Construction and Building Materials, ISSN 0950-0618, E-ISSN 1879-0526, Vol. 297, article id 123781Article in journal (Refereed) Published
Abstract [en]

This study investigated the properties and sustainability of cement-bonded composites containing industrial residues such as wood chips, tyre fibres and biomass combustion residues, i.e. bottom ash (BA) and fly ash (FA). The effect of cement-to-raw material (wood/tyre fibre) ratio (C/RM) and the aggregate content (BA and FA) on thermal and mechanical properties of the composites were investigated. Scanning electron microscopy (SEM) and life cycle analysis (LCA) were also conducted. The results revealed that as the aggregate content increased in wood composites, the mechanical properties also increased. The mean thermal conductivity and volumetric heat capacity of tyre composite samples were 0.37 W/mK and 1.2 MJ/m3K respectively, while the respective values for wood composite samples were 0.29 W/mK and 0.81 MJ/m3K. SEM analysis showed adequate bonding between wood/tyre fibres and cement matrix. LCA revealed that the materials share of the total primary energy use was about 60% for all analysed composites. © 2021 The Author(s)

Place, publisher, year, edition, pages
Elsevier Ltd , 2021. Vol. 297, article id 123781
Keywords [en]
Bottom ash, Cement construction products, Fly ash, LCA, SEM, Thermal conductivity, Aggregates, Ash handling, Ashes, Cements, Composite materials, Fibers, Life cycle, Recycling, Reinforcement, Tires, Waste incineration, Wood products, Biomass combustion, Bonded composites, Cement construction product, Combustion residues, Lifecycle analysis, Property, Scanning electrons, Thermal, Wood chip, Scanning electron microscopy
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:ri:diva-55222DOI: 10.1016/j.conbuildmat.2021.123781Scopus ID: 2-s2.0-85108696909OAI: oai:DiVA.org:ri-55222DiVA, id: diva2:1578333
Note

Funding details: Svenska Forskningsrådet Formas, 942-2016-2; Funding text 1: This work was supported by the Formas project 942-2016-2, 2017-21.; Funding text 2: The authors wish to thank JG Anderssons S?ner AB, Ragn-Sells Heljestorp AB and V?xj? Energi AB for material supplies. The assistance by Reza Hosseinpourpia during the composite production is duly acknowledged. The authors also acknowledge Aldi Kuqo at the Department of Wood Biology and Wood Products, George-August-Universit?t G?ttingen for the particle size analysis.

Available from: 2021-07-06 Created: 2021-07-06 Last updated: 2023-05-17Bibliographically approved

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Yin, Haiyan

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