Long-term properties of steel fiber reinforced silica fume based AAMs at ambient and high temperatures

Basit Öğe Kaydı
dc.authoridBulut, Metehan/0000-0002-2079-7059
dc.contributor.authorSaridemir, Mustafa
dc.contributor.authorBulut, Metehan
dc.contributor.authorDeniz, Suvat
dc.contributor.authorDeneme, Ibrahim Ozguer
dc.date.accessioned2024-11-07T13:25:26Z
dc.date.available2024-11-07T13:25:26Z
dc.date.issued2024
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractIn this study, the influences of Class C fly ash (FA), steel fiber (STF) and high temperature are researched on the mechanical and microstructural properties of STF reinforced silica fume (SF) based alkali activated mortars (AAMs) cured at the ambient (25 degrees C) temperature. The STF reinforced SF based AAMs are produced with 10%, 15%, 20% and 25% Class C FA by weight in place of SF, 0.5%, 1% and 1.5% STF by volume, liquid sodium silicate (Na2SiO3) and solid sodium hydroxide (NaOH). The apparent density (rho(a)), ultrasonic pulse velocity (U-pv), flexural strength (f(fs)) and compressive strength (f(c)) results of the STF reinforced control mortars (CMs) and SF based AAMs subjected to the ambient and elevated temperatures are investigated. The microstructural investigations are conducted with X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM)/energy dispersive X-ray (EDAX). Moreover, color changes, pores and interfacial transition zones (ITZs) in samples exposed to the ambient and high temperatures are examined by a stereoscopic microscope (SM). The results have shown that the high strengths can be obtained from STF reinforced SF based AAMs at ambient temperature (25 degrees C) and the optimum Class C FA and STF contents are 15% and 1%. Additionally, when STF reinforced SF based AAMs are exposed to high temperatures (especially 750 degrees C and 1000 degrees C), a serious decrease in the mechanical properties is observed due to the formation of a porous and spongy structure in the matrix and the STFs completely oxidizing and losing their properties.
dc.description.sponsorshipNigde Omer Halisdemir University [MMT2023/9-BAGEP]
dc.description.sponsorshipThe present study is supported by Nigde Omer Halisdemir University project Effect of fly ash on the properties of alkali activated silica fume mortars, project code MMT2023/9-BAGEP.
dc.identifier.doi10.1016/j.conbuildmat.2024.135046
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-85184665040
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2024.135046
dc.identifier.urihttps://hdl.handle.net/11480/14708
dc.identifier.volume416
dc.identifier.wosWOS:001171007100001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofConstruction and Building Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectAlkali activated mortar
dc.subjectSilica fume
dc.subjectClass C fly ash
dc.subjectSteel fiber
dc.subjectLong-term mechanical and microstructural
dc.subjectproperties
dc.subjectHigh temperature
dc.titleLong-term properties of steel fiber reinforced silica fume based AAMs at ambient and high temperatures
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu