Influence of waste aggregate type on the mechanical strength and durability of slag-rice husk ash-based geopolymer composites

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dc.authorid0000-0001-5522-427X
dc.contributor.authorBenlioglu, Arif
dc.contributor.authorDemirel, Mertcan
dc.contributor.authorAltun, Muhammet Gokhan
dc.contributor.authorOzen, Suleyman
dc.date.accessioned2026-02-08T15:15:36Z
dc.date.available2026-02-08T15:15:36Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractThis study explores the utilization of construction and demolition waste (CDW), ceramic waste (CW), and marble waste (MW) as partial sand replacements in geopolymer mortars produced with granulated blast furnace slag (GBFS) and rice husk ash (RHA). Mortars were prepared with 75% GBFS and 25% RHA, activated using sodium silicate and 12 M sodium hydroxide, and cured at ambient conditions for 28 days. Waste aggregates were substituted at 10%, 20%, and 30%, while mix ratios were kept constant. Hardened properties, drying shrinkage, and high-temperature performance (300 and 600 degrees C) were evaluated, alongside microstructural analyses (X-ray diffraction, scanning electron microscopy, thermogravimetric analysis/derivative thermogravimetric). Results showed MW10 achieved the highest compressive strength with an increase of 27%, while CW20 exhibited the best flexural strength with an increase of 8%. CW and MW reduced drying shrinkage, whereas CDW increased it and caused significant strength loss at elevated temperatures. Combining waste aggregates with industrial by-products boosts sustainability and performance.
dc.description.sponsorshipCanakkale Onsekiz Mart University, The Scientific Research Coordination Unit [FHD-2025-5029]
dc.description.sponsorshipThis work was supported by Canakkale Onsekiz Mart University, The Scientific Research Coordination Unit, Project number: FHD-2025-5029, and the authors would also like to express their gratitude to Silo G & imath;da Pirinc Tar & imath;m Sanayi ve Ticaret Limited Sirketi for kindly providing the RHA used in this study.
dc.identifier.doi10.1080/21650373.2025.2595671
dc.identifier.issn2165-0373
dc.identifier.issn2165-0381
dc.identifier.scopus2-s2.0-105024767028
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1080/21650373.2025.2595671
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5871
dc.identifier.wosWOS:001632934300001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor & Francis Ltd
dc.relation.ispartofJournal of Sustainable Cement-Based Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectGeopolymer
dc.subjectrice husk ash
dc.subjectslag
dc.subjectceramic waste
dc.subjectmarble waste
dc.subjectconstruction demolition waste
dc.titleInfluence of waste aggregate type on the mechanical strength and durability of slag-rice husk ash-based geopolymer composites
dc.typeArticle

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