Effect of side chain length change of polycarboxylate-ether based high range water reducing admixture on properties of self-compacting concrete

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dc.authorid0000-0001-5522-427Xen_US
dc.contributor.authorAltun, Muhammet Gokhan
dc.contributor.authorÖzen, Süleyman
dc.contributor.authorMardani-Aghabaglou, Ali
dc.date.accessioned2021-03-20T20:09:24Z
dc.date.available2021-03-20T20:09:24Z
dc.date.issued2020
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, İnşaat Mühendisliği Bölümüen_US
dc.description.abstractIn this study, the effect of side chain length, molecular weights changes and adsorption amount of polycarboxylate ether-based high range water reducing admixtures having constant main chain length, free non-ionic amount and anionic/non-ionic ratio on fresh properties, early and advanced age compressive strength, water absorption capacity and ultrasonic pulse velocity value of self-compacting concretes (SCC) were investigated. FTIR (Fourier transform infrared) and GPC (Gel Permeation Chromatography) analyzes were carried out to characterize admixtures. According to the test results, all SCC mixtures produced within the scope of the study provided EFNARC criteria. If the admixture side chain length is higher or shorter than a certain value, the admixture requirement is increased for providing the desired target slump-flow value in SCC mixtures. This negative effect is thought to be due to the weakness of the steric hindrance effect for admixture with short side chain, the low adsorption amount and interlacing risk of side chains for admixture with the long side chain. On the other hand, the increase in the side chain length of the admixtures had a positive effect on the time-dependent fresh state performance of the mixtures. This positive effect is thought to be due to the low adsorption amount of the admixture, the increase in the side chain length and the increase of the non-adsorbed free polymer content in the mixture. While side chain length change of the water reducing admixture affected the 1 and 2-day compressive strength values of SCC mixtures, the 3, 7 and 28-day compressive strengths and the 28-day water absorption, ultrasound and dynamic elasticity modulus values did not significantly affect. (C) 2020 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipBursa Uludag University Scientific Research Projects Centre (BAP) [AYP(MH)-2016/16, DDP(MH)-2018/9]; Scientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [217M408]en_US
dc.description.sponsorshipWater reducing admixtures used in the study were synthesized by R&D Department of Polisan Construction Chemicals Company. The authors would like to thank Polisan Construction Chemicals Company and Bursa-Beton Ready Mixed Concrete Plant authorities for their kind assistance in providing the cement, aggregate and water reducing admixture as well as determining the chemical composition, physical and mechanical properties of these products. Besides, this study was carried out using facilities provided from the Bursa Uludag University Scientific Research Projects Centre (BAP) (Grant No: AYP(MH)-2016/16 and DDP(MH)-2018/9) and Scientific and Technological Research Council of Turkey (TUBITAK) (Grant No: 217M408).en_US
dc.identifier.doi10.1016/j.conbuildmat.2020.118427en_US
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttp://doi.org/10.1016/j.conbuildmat.2020.118427
dc.identifier.urihttps://hdl.handle.net/20.500.12885/406
dc.identifier.volume246en_US
dc.identifier.wosWOS:000527309800021en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorÖzen, Süleyman
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofConstruction And Building Materialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNon-ionic side chainen_US
dc.subjectWater reducing admixtureen_US
dc.subjectSelf-compacting concreteen_US
dc.subjectPolycarboxylate based admixturesen_US
dc.titleEffect of side chain length change of polycarboxylate-ether based high range water reducing admixture on properties of self-compacting concreteen_US
dc.typeArticleen_US

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