Effect of temperature on the fresh and hardened state properties of alkali-activated slag/fly ash mixtures

dc.authorid Sun, Yubo/0000-0001-8348-8280
dc.authorscopusid 57218222878
dc.authorscopusid 8396418200
dc.authorscopusid 16029975300
dc.authorscopusid 57363103500
dc.authorscopusid 57202918369
dc.authorwosid Dai, Xiaodi/HNC-1504-2023
dc.authorwosid Sun, Yubo/AHD-9613-2022
dc.contributor.author Dai, Xiaodi
dc.contributor.author Aydin, Serdar
dc.contributor.author Yardimci, Mert Yucel
dc.contributor.author Sun, Yubo
dc.contributor.author De Schutter, Geert
dc.date.accessioned 2024-05-25T11:38:05Z
dc.date.available 2024-05-25T11:38:05Z
dc.date.issued 2023
dc.department Okan University en_US
dc.department-temp [Dai, Xiaodi; Yardimci, Mert Yucel; Sun, Yubo; De Schutter, Geert] Univ Ghent, Dept Struct Engn & Bldg Mat, Magnel Vandepitte Lab, B-9052 Ghent, Belgium; [Aydin, Serdar] Dokuz Eylul Univ, Dept Civil Engn, TR-35160 Izmir, Turkiye; [Yardimci, Mert Yucel] Istanbul Okan Univ, Dept Civil Engn, TR-34959 Istanbul, Turkiye en_US
dc.description Sun, Yubo/0000-0001-8348-8280 en_US
dc.description.abstract The effect of ambient temperature on the engineering properties of alkali-activated materials (AAM) needs to be further investigated due to the high variety of activating solutions in the AAM technology. This paper presents the rheological behavior, structural build-up, reaction kinetics and mechanical properties of GGBFS-FA mixtures activated by sodium hydroxide, sodium silicate, sodium carbonate and sodium sulfateinvestigated under different ambient temperature conditions. It was found that the effect of ambient temperature on the rheology and reaction kinetics was highly dependent on the activator type. Under room temperature conditions, the highest and lowest yield stress values were obtained in sodium hydroxide and sodium silicate mixtures, respectively. The increase in temperature did not affect the yield stresses and viscosities of sodium carbonate and sodium sulfate mixtures; however, the yield stresses of sodium hydroxide and sodium silicate mixtures significantly increased. This effect was more pronounced in mixtures with high Ms values. Higher storage modulus values were obtained with an increase in temperature, indicating initial structuration with temperature. The increasing temperature enhanced the compressive strength of alkali-activated GGBFS-FA mixtures. This improvement was more pronounced at early ages for the sodium silicate mixture, and at later ages for the sodium carbonate and sodium sulfate mixtures, while it was very limited in the sodium hydroxide mixture. The SEM images and calorimetric measurements showed the formation of a denser microstructure and enhancement in the exothermic peak with a shorter induction period with an increase in temperature. en_US
dc.description.sponsorship FWO-EOS [30439691] en_US
dc.description.sponsorship This paper is a scientific output of the research actions performed in the framework of the FWO-EOS project 30439691 INTERdisciplinary multiscale Assessment of a new generation of Concrete with alkali-activated maTerials' (INTERACT). The financial support by FWO-EOS is gratefully acknowledged. en_US
dc.identifier.citationcount 0
dc.identifier.doi 10.1617/s11527-023-02194-w
dc.identifier.issn 1359-5997
dc.identifier.issn 1871-6873
dc.identifier.issue 5 en_US
dc.identifier.scopus 2-s2.0-85161382924
dc.identifier.scopusquality Q2
dc.identifier.uri https://doi.org/10.1617/s11527-023-02194-w
dc.identifier.uri https://hdl.handle.net/20.500.14517/1244
dc.identifier.volume 56 en_US
dc.identifier.wos WOS:001003682600001
dc.identifier.wosquality Q2
dc.language.iso en
dc.publisher Springer en_US
dc.relation.publicationcategory Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı en_US
dc.rights info:eu-repo/semantics/closedAccess en_US
dc.scopus.citedbyCount 3
dc.subject Fresh properties en_US
dc.subject Structural build-up en_US
dc.subject Ground granulated blast furnace slag en_US
dc.subject Fly ash en_US
dc.subject Temperature en_US
dc.title Effect of temperature on the fresh and hardened state properties of alkali-activated slag/fly ash mixtures en_US
dc.type Article en_US
dc.wos.citedbyCount 2

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