Modification of Polypropylene Fibers with Sodium Silicate: Enhancement of Pozzolanic Properties in Cement-Based Systems

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dc.authorid0009-0009-0981-1647
dc.authorid0000-0003-0326-5015
dc.authorid0000-0001-5522-427X
dc.contributor.authorKaya, Yahya
dc.contributor.authorBalci, Petek
dc.contributor.authorOzen, Suleyman
dc.contributor.authorMardani, Ali
dc.contributor.authorKara, Ali
dc.date.accessioned2026-02-08T15:15:59Z
dc.date.available2026-02-08T15:15:59Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractThis study investigates the effect of sodium-silicate-based chemical surface modification of polypropylene (PP) fibers on the mechanical and fresh-state properties of cementitious composites. The proposed method introduces silanol and siloxane groups onto the PP surface through a radical-assisted chlorination route, aiming to enhance fiber-matrix interfacial bonding. Modified fibers increased the polycarboxylate ether (PCE) demand by 100% compared to the control mixture, while unmodified PP fibers caused a 58% increase at equivalent workability. The incorporation of PP fibers resulted in limited changes in compressive strength (1-7%), whereas silicate-modified fibers led to notable late-age flexural strength gains of 10% (28 days) and 17% (56 days). Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDX) and Fourier Transform Infrared Spectroscopy (FTIR) analyses confirmed successful surface functionalization, while the heterogeneous silicate deposition still contributed positively to interfacial transition zone (ITZ) performance. Overall, sodium-silicate-modified PP fibers improve flexural behavior and interfacial bonding in cement-based systems, offering a promising approach for enhanced mechanical performance and sustainability.
dc.description.sponsorship[FGA-2024-1754]
dc.description.sponsorshipThis research was funded by grant number FGA-2024-1754.
dc.identifier.doi10.3390/polym17233206
dc.identifier.issn2073-4360
dc.identifier.issue23
dc.identifier.pmid41374893
dc.identifier.scopus2-s2.0-105024566109
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.3390/polym17233206
dc.identifier.urihttps://hdl.handle.net/20.500.12885/6073
dc.identifier.volume17
dc.identifier.wosWOS:001634375900001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherMdpi
dc.relation.ispartofPolymers
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzWOS_KA_20260207
dc.subjectPP fiber
dc.subjectcementitious system
dc.subjectsodium silicate
dc.subjectpozzolanic properties
dc.titleModification of Polypropylene Fibers with Sodium Silicate: Enhancement of Pozzolanic Properties in Cement-Based Systems
dc.typeArticle

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