Enhanced Absorption-Dominant EMI Shielding Performance of Pyramidal Cementitious Composites Incorporating Recycled Plastics and Magnetite Minerals for 5G Applications

Basit Öğe Kaydı
dc.contributor.authorCakir, Mehmet
dc.contributor.authorEngin, Mustafa Alptekin
dc.contributor.authorCamuzcuoglu, Murat
dc.date.accessioned2026-09-01T15:52:33Z
dc.date.available2026-09-01T15:52:33Z
dc.date.issued2026
dc.departmentBayburt Üniversitesi
dc.description.abstractIn this study, waste polypropylene (PP) and magnetite (Fe3O4) mineral-reinforced cement-based pyramidal composite structures were designed, manufactured, and experimentally characterized to reduce electromagnetic interference (EMI) problems in the 3.3-4.9 GHz frequency band for 5G communication systems. Unlike traditional planar concrete surfaces, the aim was to minimize surface reflections and obtain an absorption-dominant shielding mechanism by providing gradient impedance matching through the pyramidal geometry. Although the use of carbon-based nanomaterials is common in the current literature, their high cost and corrosion risks limit their large-scale applications. This study involves the evaluation of waste polypropylene disposal and self-enriching magnetite mineral together. Theoretical analyses were supported by the Lichtenecker Logarithmic Mixing Rule and the Maxwell-Garnett model, and seven different mixing scenarios (S1-S7) were measured using the free-space method with a Libre vector network analyzer. Experimental results showed that the pure concrete sample exhibited predominantly reflective behaviour, with shielding performance improving significantly as the filler ratio increased. The S4 sample, containing 15% PP and 10% magnetite, offered broadband and balanced absorption performance, while the S7 sample, containing 25% PP and 25% magnetite, provided the highest shielding effectiveness with reflection below -10 dB across the entire band and transmission loss reaching -65 dB.
dc.identifier.doi10.3390/su18041875
dc.identifier.issn2071-1050
dc.identifier.issue4
dc.identifier.scopus2-s2.0-105031391430
dc.identifier.scopusqualityN/A
dc.identifier.urihttp://dx.doi.org/10.3390/su18041875
dc.identifier.urihttps://hdl.handle.net/20.500.12403/8437
dc.identifier.volume18
dc.identifier.wosWOS:001701338700001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherMDPI
dc.relation.ispartofSustainability
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20260820
dc.subjectElectromagnetic Shielding
dc.subjectRecycled Materials In Concrete
dc.subjectMagnetite Mineralogy And Petrology
dc.subjectComposite Materials
dc.subjectScattering Parameters (S-Parameters)
dc.titleEnhanced Absorption-Dominant EMI Shielding Performance of Pyramidal Cementitious Composites Incorporating Recycled Plastics and Magnetite Minerals for 5G Applications
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu