Eco-Friendly Synthesis of Geopolymer Foams from Natural Zeolite Tuffs and Silica Fume: Effects of H2O2 and Calcium Stearate on Foam Properties

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dc.authoridIBRAHIM, JAMAL-ELDIN F M/0000-0003-2479-5955
dc.authorid�ahin, Ethem �lhan/0000-0001-7859-9066
dc.contributor.authorSahin, Ethem Ilhan
dc.contributor.authorIbrahim, Jamal-Eldin F. M.
dc.date.accessioned2026-02-27T07:33:11Z
dc.date.available2026-02-27T07:33:11Z
dc.date.issued2025
dc.description.abstractThe need for environmentally friendly and energy-efficient building materials has increased significantly. This study synthesizes geopolymer foams with enhanced thermal insulation properties using silica fume and natural zeolite tuff. Zeolite's porous structure and active sites improve polymerization and strengthen the foam, while silica fume reacts with NaOH to release sodium silicate, forming a durable geopolymer matrix. Foam porosity is introduced by generating oxygen gas from H2O2 and NaOH, with calcium stearate stabilizing the foam structure. Comparative analysis of the compressive strength, bulk density, porosity, and thermal conductivity shows that incorporating H(2)O(2 )and calcium stearate significantly reduces thermal conductivity (from 0.19 to 0.06 W/mK) while ensuring a highly porous system (66-82.6% porosity) with adequate mechanical strength (1.6-3.39 MPa). These findings highlight the potential of the developed geopolymer foam for sustainable insulation applications.
dc.identifier.doi10.3390/buildings15060970
dc.identifier.issn2075-5309
dc.identifier.issue6
dc.identifier.urihttp://dx.doi.org/10.3390/buildings15060970
dc.identifier.urihttps://hdl.handle.net/20.500.14669/4475
dc.identifier.volume15
dc.identifier.wosWOS:001454004200001
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherMDPI
dc.relation.ispartofBuildings
dc.relation.publicationcategoryMakale - Uluslararas� Hakemli Dergi - Kurum ��retim Eleman�
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20260302
dc.subjectnatural zeolite
dc.subjectsilica fume
dc.subjectH2O2
dc.subjectcalcium stearate
dc.subjectgeopolymer foams
dc.subjectthermal conductivity
dc.titleEco-Friendly Synthesis of Geopolymer Foams from Natural Zeolite Tuffs and Silica Fume: Effects of H2O2 and Calcium Stearate on Foam Properties
dc.typeArticle

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