Influence of water to binder ratio on the rheology and structural Build-up of Alkali-Activated Slag/Fly ash mixtures

dc.authoridDai, Xiaodi/0000-0002-6260-7786
dc.authorwosidDai, Xiaodi/HNC-1504-2023
dc.authorwosidaydın, serdar/AAA-2821-2022
dc.authorwosidYardimci, Mert Yucel/AAN-8109-2021
dc.authorwosidYardimci, Mert/AAD-1942-2021
dc.contributor.authorYardımcı, Mert Yücel
dc.contributor.authorAydin, Serdar
dc.contributor.authorYardimci, Mert Yucel
dc.contributor.authorLesage, Karel
dc.contributor.authorde Schutter, Geert
dc.contributor.otherİnşaat Mühendisliği / Civil Engineering
dc.date.accessioned2024-05-25T11:42:21Z
dc.date.available2024-05-25T11:42:21Z
dc.date.issued2020
dc.departmentOkan Universityen_US
dc.department-temp[Dai, Xiaodi; Aydin, Serdar; Yardimci, Mert Yucel; Lesage, Karel; de Schutter, Geert] Univ Ghent, Magnel Vandepitte Lab, Dept Struct Engn & Bldg Mat, Ghent, Belgium; [Aydin, Serdar] Dokuz Eylul Univ, Dept Civil Engn, TR-35160 Izmir, Turkey; [Yardimci, Mert Yucel] Istanbul Okan Univ, Dept Civil Engn, Tuzla Campus, TR-34959 Istanbul, Turkeyen_US
dc.descriptionDai, Xiaodi/0000-0002-6260-7786en_US
dc.description.abstractIn this study, the effects of water to binder (w/b) ratio on the rheological and fresh state properties of alkali-activated cement (AAC) pastes have been investigated. A mixture of 50% type F fly ash (FA) and 50% ground granulated blast furnace slag (GGBFS) was activated by a mixture of sodium hydroxide and sodium silicate, in three different w/b ratios of 0.32, 0.37 and 0.42. Setting time, ultrasonic pulse velocity (UPV), heat evolution by isothermal calorimetry, flow spread by mini-slump test, rheological properties by means of flow curve and viscoelastic properties such as storage modulus (G') and loss factor (G '') were determined on the paste mixtures. The results showed that the higher w/b ratio led to structural build-up with higher rate compared to lower w/b ratios. GGBFS provided the main contribution to the increase of storage modulus in the early stage of hybrid mixture of GGBFS and FA. The dynamic yield stress, plastic viscosity and thixotropic index values decrease with an increase in w/b ratio of AAC mixture. The setting times of AAC mixtures were found to be less dependent on the w/b ratio as compared to ordinary Portland cement mixtures. (C) 2020 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipFWO-EOS project 'INTERdisciplinary multiscale Assessment of a new generation of Concrete with alkali-activated maTerials' (INTERACT) [30439691]; FWO-EOSen_US
dc.description.sponsorshipThis paper is the result of 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.citation69
dc.identifier.doi10.1016/j.conbuildmat.2020.120253
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2020.120253
dc.identifier.urihttps://hdl.handle.net/20.500.14517/1589
dc.identifier.volume264en_US
dc.identifier.wosWOS:000585942300063
dc.identifier.wosqualityQ1
dc.language.isoen
dc.publisherElsevier Sci Ltden_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAlkali-Activated Cementen_US
dc.subjectRheologyen_US
dc.subjectStorage modulusen_US
dc.subjectFly ashen_US
dc.subjectGround Granulated Blast Furnace Slagen_US
dc.subjectPore solution chemistryen_US
dc.titleInfluence of water to binder ratio on the rheology and structural Build-up of Alkali-Activated Slag/Fly ash mixturesen_US
dc.typeArticleen_US
dspace.entity.typePublication
relation.isAuthorOfPublicationbe14bc6f-e4a9-4aa8-b872-2ac45b156286
relation.isAuthorOfPublication.latestForDiscoverybe14bc6f-e4a9-4aa8-b872-2ac45b156286
relation.isOrgUnitOfPublication43a00f20-ca47-4515-b3a3-db2c86320ff6
relation.isOrgUnitOfPublication.latestForDiscovery43a00f20-ca47-4515-b3a3-db2c86320ff6

Files