Sustainable fabrication of lightweight geopolymer foams from silica-fume and zeolite tuffs: Utilizing Al as foaming agent for thermal insulation

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dc.contributor.authorIbrahim, Jamal-Eldin F.M.
dc.contributor.authorŞahin, Ethem İlhan
dc.contributor.authorBasyooni-M. Kabatas, Mohamed A.
dc.contributor.authorGéber, Róbert
dc.contributor.authorKocserha, István
dc.date.accessioned2025-01-06T17:30:04Z
dc.date.available2025-01-06T17:30:04Z
dc.date.issued2024
dc.description.abstractIn response to the increasing demand for eco-friendly thermal insulation materials in construction, this research focuses on the development of geopolymer foams with optimized thermal insulation properties. The study employs silica fume and zeolite tuff as primary raw materials, activated by sodium hydroxide and sodium silicate solution, and incorporates aluminum powder and sodium lauryl sulfate (SLS) as additives to enhance porosity and refine pore size distribution. A comprehensive analysis of technical properties, including compressive strength, porosity, bulk density, and thermal conductivity, is conducted to assess the influence of these additives. The findings demonstrate that SLS plays a main role in modifying the microstructure, resulting in more uniform and interconnected pores. The addition of moderate amounts of SLS (0.9 wt%) promotes the formation of consistent cell sizes and porosity, contributing to the overall structural integrity of the foams. The foams are predominantly amorphous, with some residual crystalline phases observed. Scanning electron microscopy (SEM) reveals the development of sodium aluminum silicate whiskers, which serve as reinforcement, enhancing the mechanical strength of the geopolymer matrix. The resulting geopolymer foams exhibit high porosity (64.36–81.32 %), low thermal conductivity (0.29–0.07 W/m·K), and sufficient compressive strength (0.96–2.71 MPa), indicating their potential as sustainable insulation materials for construction applications. © 2024 The Authors
dc.identifier.doi10.1016/j.cscm.2024.e04024
dc.identifier.issn2214-5095
dc.identifier.scopus2-s2.0-85210619310
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.cscm.2024.e04024
dc.identifier.urihttps://hdl.handle.net/20.500.14669/1473
dc.identifier.volume21
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Ltd
dc.relation.ispartofCase Studies in Construction Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241211
dc.subjectAluminum powder
dc.subjectGeopolymer foam
dc.subjectNatural zeolite tuff
dc.subjectSilica fume
dc.subjectSodium lauryl sulphate
dc.subjectThermal conductivity
dc.titleSustainable fabrication of lightweight geopolymer foams from silica-fume and zeolite tuffs: Utilizing Al as foaming agent for thermal insulation
dc.typeArticle

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