High temperature resistant restoration mortar with fly ash and GGBFS

dc.authoridKilic Demircan, Ruya/0000-0001-7318-9383
dc.authoridKaplan, Gokhan/0000-0001-6067-7337
dc.authoridCELIK, DAMLA NUR/0000-0001-8356-4263
dc.contributor.authorDemircan, Ruya Kilic
dc.contributor.authorKaplan, Gokhan
dc.contributor.authorCelik, Damla Nur
dc.date.accessioned2025-03-23T19:34:40Z
dc.date.available2025-03-23T19:34:40Z
dc.date.issued2022
dc.departmentSinop Üniversitesi
dc.description.abstractNowadays, the development of sustainable building materials is of loom large in for the preserve resources and reducing CO2 emission and environmental pollution effects. Exposure to fire or other high temperatures of mortars produced with calcium-based binders (cement or hydraulic lime) adversely affects their mechanical properties. In addition, the effect of high temperature may cause a change in the pore structures, causing cracking and spalling. Protecting the integrity of historical buildings exposed to high temperatures is important for cultural sustainability. In this study, natural hydraulic lime (NHL) used as a binder in mortars was replaced with 15, 30 and 60% fly ash (FA) and granulated blast furnace slag (GBFS). In the mixtures, 1.5% (by volume) polypropylene fiber (PF) was also used. Test results reveal that while the mortars' workability increased as the FA and GBFS content increased, PF decreased the flow diameters of the mortars. It has been determined that the paste content affects the porosity and water absorption rates of mortars. With the addition of FA content, paste content increased and porosity reduced. Compressive strength over 10 MPa was obtained by using 30% FA in 90-day lime mortars. As the addition of GBFS, the compressive and flexural strength were negatively affected. PF has reduced the porosity and water penetration depth of the mortars thanks to its micro filler effect. FA-based mixtures were more resistant to high temperatures than GBFS-based mixtures. Compressive strength was measured between 4.3 and 8.6 MPa after 600 degrees C temperature in FA-based mixtures. In fibrous mixtures, increment of mass loss was more with high temperature. C-S-H gels were observed in XRD and SEM analyzes of mortars exposed to high temperatures. PF was observed in stereomicroscope images of mixtures exposed to 200 degrees C. Since the porosity of the mortars is relatively high (19.7%-30.8%), the PF in the mixtures exposed to 200 degrees C did not melt completely but was damaged. As a result, it would be more appropriate to use 30% of FA and 15% of GBFS in NHL mortars.
dc.identifier.doi10.1080/21650373.2021.1992682
dc.identifier.endpage438
dc.identifier.issn2165-0373
dc.identifier.issn2165-0381
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85119321629
dc.identifier.scopusqualityQ2
dc.identifier.startpage418
dc.identifier.urihttps://doi.org/10.1080/21650373.2021.1992682
dc.identifier.urihttps://hdl.handle.net/11486/5705
dc.identifier.volume11
dc.identifier.wosWOS:000719750200001
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.snmzKA_WOS_20250323
dc.subjectdurability
dc.subjectsustainability
dc.subjectblast furnace slag
dc.subjectfly ash
dc.subjectpolypropylene fiber
dc.subjectrestoration mortar
dc.titleHigh temperature resistant restoration mortar with fly ash and GGBFS
dc.typeArticle

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