The effect of caffeine molecule on the physico-chemical properties of blended cement

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dc.authoridKurtay, Mine/0000-0003-4629-3198
dc.authoridGerengi, Husnu/0000-0002-9663-4264
dc.authoridKOCAK, YILMAZ/0000-0002-5281-5450
dc.authorwosidGerengi, Husnu/W-3898-2018
dc.contributor.authorKurtay, Mine
dc.contributor.authorGerengi, Husnu
dc.contributor.authorKocak, Yilmaz
dc.date.accessioned2021-12-01T18:47:28Z
dc.date.available2021-12-01T18:47:28Z
dc.date.issued2020
dc.department[Belirlenecek]en_US
dc.description.abstractCaffeine is a nontoxic and eco-friendly natural molecule used in the food industry as well as a corrosion inhibitor in various corrosive media. However, its behavior and performance as an additive in the construction industry has not been explored. This paper investigates the effect of caffeine as an additive on strength, water demands, setting time and hydration mechanism of cement. In the first instance, the water demand, volume expansion and setting time of cement pastes, incorporating 0, 25, 50 and 75 ppm of caffeine were determined. In the second section, the rate of hydration and cement pastes' products were conducted by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermal analysis and scanning electron microscope (SEM) at 28 days. Finally, the cement mortars' compressive strengths were determined at 2, 7 and 28 days intervals. Consequently, mortars containing 75 ppm caffeine registered higher strength than the pure cement mortars due to high quantities of primary C-S-H gel, chemically bound water, compact structure at 28 days. Furthermore, by result of analysis and experiments, it was determined that caffeine had no negative effect on cement. (C) 2020 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipDuzce University Research FundDuzce University [2019.06.05.1036]; Nuh Cement Plant executivesen_US
dc.description.sponsorshipThe authors would like to thank the financial support from Duzce University Research Fund (Project Code Number: 2019.06.05.1036) and Nuh Cement Plant executives and the staff for their invaluable contributions on this study.en_US
dc.identifier.doi10.1016/j.conbuildmat.2020.119394
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-85084112106en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2020.119394
dc.identifier.urihttps://hdl.handle.net/20.500.12684/10280
dc.identifier.volume255en_US
dc.identifier.wosWOS:000539386100074en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
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.subjectCaffeineen_US
dc.subjectCementen_US
dc.subjectHydrationen_US
dc.subjectCompressive strengthen_US
dc.subjectMicrostructureen_US
dc.subjectThermal propertiesen_US
dc.subjectChloride-Induced Corrosionen_US
dc.subjectReinforcing Steelen_US
dc.subjectSilica Fumeen_US
dc.subjectFly-Ashen_US
dc.subjectCalcium Nitriteen_US
dc.subjectZeoliteen_US
dc.subjectEarthquakeen_US
dc.subjectInhibitoren_US
dc.subjectPerformanceen_US
dc.subjectDiatomiteen_US
dc.titleThe effect of caffeine molecule on the physico-chemical properties of blended cementen_US
dc.typeArticleen_US

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