Durability of slag-based alkali-activated materials: A critical review

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dc.authoridGokce, H. Suleyman/0000-0002-6978-0135
dc.contributor.authorGokce, H. S.
dc.date.accessioned2024-10-04T18:49:32Z
dc.date.available2024-10-04T18:49:32Z
dc.date.issued2024
dc.departmentBayburt Üniversitesien_US
dc.description.abstractAs the world becomes increasingly aware of the devastating effects of climate change, the need for sustainable building materials that are both durable and environmentally friendly increases. Geopolymer and alkali-activated materials formed by a chemical reaction between an alkaline activator solution and an aluminosilicate source have gained popularity in recent years. The alkaline activator solution dissolves the aluminosilicate source, which then undergoes a polycondensation reaction to form a three-dimensional geopolymeric gel network. The development of this network ensures the strength and durability of the material. Today, this phenomenon of durability has been studied in detail to enable the development of superior construction materials, taking into account degradation mechanisms such as carbonation, leaching, shrinkage, fire, freezing and thawing, and exposure to aggressive environments (chlorides, acids, and sulphates). Although there are many unsolved problems in their engineering applications, slag-based alkali-activated materials appear to be more advantageous and are promising as alternative materials to ordinary Portland cement. First of all, it should not be ignored that the cure sensitivity is high in these systems due to compressive strength losses of up to 69%. Loss of strength of alkali-activated materials is considered an important indicator of degradation. In binary precursors, the presence of fly ash in slag can result in an improvement of over 10% in compressive strength of the binary-based alkali-activated materials after undergoing carbonation. The binary systems can provide superior resistance to many degradation mechanisms, especially exposure to high-temperature. The partial presence of class F fly ash in the slag-based precursor can overcome the poor ability of alkali-activated materials to withstand high temperatures. Due to the desired pore structure, alkali-activated materials may not be damaged even after 300 freeze-thaw cycles. Their superior permeability compared to cementitious counterparts can extend service life against chloride corrosion by more than 20 times. While traditional (ordinary Portland cement-based) concrete remains the most widely used material in construction, geopolymer concrete's superior performance makes it an increasingly emerging option for sustainable and long-lasting infrastructure.en_US
dc.description.sponsorshipIzmir Democracy Universityen_US
dc.description.sponsorshipNo Statement Availableen_US
dc.identifier.doi10.1007/s41779-024-01011-z
dc.identifier.endpage903en_US
dc.identifier.issn2510-1560
dc.identifier.issn2510-1579
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-85189166631en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage885en_US
dc.identifier.urihttps://doi.org/10.1007/s41779-024-01011-z
dc.identifier.urihttp://hdl.handle.net/20.500.12403/3201
dc.identifier.volume60en_US
dc.identifier.wosWOS:001194901000001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal of the Australian Ceramic Societyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAlkali-activated materialsen_US
dc.subjectGeopolymersen_US
dc.subjectGround blast furnace slagen_US
dc.subjectDurabilityen_US
dc.titleDurability of slag-based alkali-activated materials: A critical reviewen_US
dc.typeArticleen_US

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