Residual mechanical performance of lightweight fiber-reinforced geopolymer mortar composites incorporating expanded clay after elevated temperatures

Basit Öğe Kaydı
dc.authoridKadhim, Sarah/0000-0002-8674-104X
dc.contributor.authorAljanabi, Maysam
dc.contributor.authorCevik, Abdulkadir
dc.contributor.authorNis, Anil
dc.contributor.authorBakbak, Derya
dc.contributor.authorKadhim, Sarah
dc.date.accessioned2024-09-11T19:52:11Z
dc.date.available2024-09-11T19:52:11Z
dc.date.issued2022
dc.departmentİstanbul Gelişim Üniversitesien_US
dc.description.abstractThis research provides an experimental investigation on the properties of fiber reinforced composite materials consisting of lightweight expanded clay aggregates (LECA) and polyvinyl alcohol (PVA) fibers. The influence of temperature (room temperature, 250 degrees C, and 500 degrees C) on the lightweight geopolymer mortar (LWGM) composite materials is also explored. LECA is used as a partial replacement to river sand with 60% and 80%. The base material utilized for LWGM is slag activated by a mixture of sodium silicate and sodium hydroxide solutions. The fresh properties in terms of workability and density were performed. A series of experiments, such as compression, flexural and uniaxial tensile strength tests, were executed to assess the mechanical properties of LWGM composite materials. In addition, the microscopic variations due to the elevated temperature were also evaluated by scanning electron microscopy (SEM) to understand the macro-scale behavior of the samples. The results indicated that increasing the level of LECA replacement caused a reduction in the density and compressive strength of the LWGM. Also, incorporating a 1% PVA fiber volume fraction significantly enhanced the flexural and uniaxial tensile behavior of LWGM composite materials. The compressive strength enhancements were observed at 250 degrees C due to further geopolymerization, while compressive strength reductions were obtained at 500 degrees C due to the vapor impact and difference in thermal expansion. In addition, the load-carrying capacity of all samples increased, and displacement capacity decreased under flexural tests at 250 degrees C. However, the ductile behavior of the PVA incorporating specimens changed to brittle due to the melting of PVA fibers.en_US
dc.identifier.doi10.1177/00219983221088902
dc.identifier.endpage1752en_US
dc.identifier.issn0021-9983
dc.identifier.issn1530-793X
dc.identifier.issue11en_US
dc.identifier.scopus2-s2.0-85127511728en_US
dc.identifier.startpage1737en_US
dc.identifier.urihttps://doi.org/10.1177/00219983221088902
dc.identifier.urihttps://hdl.handle.net/11363/7923
dc.identifier.volume56en_US
dc.identifier.wosWOS:000775871300001en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherSage Publications Ltden_US
dc.relation.ispartofJournal of Composite Materialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmz20240903_Gen_US
dc.subjectLightweight geopolymer mortaren_US
dc.subjectlightweight expanded clay aggregateen_US
dc.subjectpolyvinyl alcohol fibersen_US
dc.subjectelevated temperatureen_US
dc.subjectmechanical propertiesen_US
dc.titleResidual mechanical performance of lightweight fiber-reinforced geopolymer mortar composites incorporating expanded clay after elevated temperaturesen_US
dc.typeArticleen_US

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu