Development of one-part geopolymer binder produced from alkali fused boron mine tailings

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dc.authorid0000-0002-5176-9990
dc.contributor.authorKiziltepe, Cavit Cagatay
dc.contributor.authorYuksel, Isa
dc.contributor.authorAydin, Serdar
dc.contributor.authorSigindere, Aysenur
dc.date.accessioned2026-02-08T15:15:21Z
dc.date.available2026-02-08T15:15:21Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractThe main purpose of this study is to investigate whether the boron mine tailings can be used as a raw material in producing one-part geopolymer binder by using the alkali fusion method. The boron mine tailings and alkali activator were calcined at 650 degrees C for 3h in a furnace. Both sodium hydroxide and sodium carbonate were used at different ratios as the alkali activator during the calcination process. The setting times, mechanical properties, sorptivity, and drying shrinkage of the one-part geopolymer mixtures based on alkali-fused boron mine tailings were investigated within the scope of this study. Furthermore, microstructural analyses were performed on one-part geopolymer paste samples to complement the obtained test results. The highest compressive strength value (24.2 MPa) was obtained from specimens activated with sodium hydroxide (4 % Na2O by binder weight), while the highest flexural strength value (4.3 MPa) was obtained from the specimens with 20 % sodium carbonate. New crystalline phases such as merwinite, monticellite, sodium peroxide, and magnesium oxide were identified in the alkali-fused boron mine tailings. Ultimately, the main reaction product contributing to specimens' compressive strength development was identified as the riversideite phase.
dc.description.sponsorshipScientific and Technological Research Council of Turkiye (TUEBITAK) [219M426]
dc.description.sponsorshipThis study was supported by the Scientific and Technological Research Council of Turkiye (TUEBITAK) (Grant Number: 219M426) . The authors would also like to thank Eti MadenIsletmeleri's General Directorate for supplying the boron mine tailings used in this study.
dc.identifier.doi10.1016/j.jobe.2025.113099
dc.identifier.issn2352-7102
dc.identifier.scopus2-s2.0-105007786943
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jobe.2025.113099
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5736
dc.identifier.volume111
dc.identifier.wosWOS:001511452900009
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofJournal of Building Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectBoron mine tailings
dc.subjectOne-part geopolymer
dc.subjectAlkali fusion
dc.subjectSorptivity
dc.subjectDrying shrinkage
dc.subjectSetting times
dc.titleDevelopment of one-part geopolymer binder produced from alkali fused boron mine tailings
dc.typeArticle

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