Enhancement of physico-mechanical properties of geopolymer particleboards through the use of seagrass fibersShow others and affiliations
2023 (English)In: Construction and Building Materials, ISSN 0950-0618, E-ISSN 1879-0526, Vol. 374, article id 130889Article in journal (Refereed) Published
Abstract [en]
Two types of geopolymer-bonded boards were produced using initial wetting of lignocellulosic aggregates followed by dry mixing and hot-pressing. Boards were prepared by incorporating large fractions of lignocellulosic material (up to 50 wt%). Geopolymer particleboards (GP) were produced using wood particles whereas geopolymer sandwich boards (GSB) were produced from wood particles and seagrass fibers, with the latter allocated in the outer layers. Inclusion of seagrass fibers was found to enhance bending strength and toughness of GSB by up to 20 and 40 % respectively. The bending strength tended to increase with the addition of lignocellulosic aggregates, reaching up to 8.9 N mm−2. Fire resistance of GSB was slightly higher compared to GP. Further investigations such as FT-IR, XRD analysis and visual examination by digital microscopy showed an adequate degree of geopolymerization and mixing of the precursor and alkaline activator, indicating the high effectiveness of the mixing technique.
Place, publisher, year, edition, pages
Elsevier, 2023. Vol. 374, article id 130889
Keywords [en]
Aggregates, Bending strength, Fibers, Geopolymers, Hot pressing, Inorganic polymers, Plants (botany), ’Dry’ [, Geopolymer, Geopolymer particleboard, Lignocellulosic aggregates, Physicomechanical properties, Posidonia oceanica, Posidonium oceanicum fiber, Sandwich boards, Seagrasses, Wood particles, Mixing
National Category
Wood Science Paper, Pulp and Fiber Technology
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
URN: urn:nbn:se:lnu:diva-123737DOI: 10.1016/j.conbuildmat.2023.130889ISI: 000954527600001Scopus ID: 2-s2.0-85149709991OAI: oai:DiVA.org:lnu-123737DiVA, id: diva2:1788374
2023-08-162023-08-162024-09-05Bibliographically approved