The effect of alkali activation solutions with different water glass/NaOH solution ratios on geopolymer composite materials

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dc.contributor.authorDogan-Saglamtimur, N.
dc.contributor.authorOz, H. Oznur
dc.contributor.authorBilgil, A.
dc.contributor.authorVural, T.
dc.contributor.authorSuzgec, E.
dc.date.accessioned2024-11-07T13:23:57Z
dc.date.available2024-11-07T13:23:57Z
dc.date.issued2019
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description4th International Conference on Innovative Materials, Structures and Technologies (IMST) -- SEP 25-27, 2019 -- Riga, LATVIA
dc.description.abstractIn this study, geopolymer materials were produced from fly ash (FA) supplied from Isken Sugozu Thermal Power Plant located in Adana, Turkey. FA and Rilem Cembureau Standard Sand were used together with the ratio of 0.50. At first, two different alkaline solution/material ratio (FA+standard sand) (L/M) were selected as 0.20 and 0.40 for the design parameters. In the production of geopolymer composite material, sodium silicate (Na2SiO3) and sodium hydroxide (12 M NaOH) were used together within the ratio of 1, 1.5, 2, 2.5 and 3 by weight, respectively. A totally of 20 mixes were cured at 70 and 100 C for 24 hrs, respectively and thereafter kept in room temperature until testing age. Physical characteristics of hardened mortar were determined via the bulk density, water absorption and porosity values at 28 days while the strength of geopolymers was obtained on the results of compressive strength and flexural strength tests conducted at 7, 28 and 90 days. Considering the testing parameters, geopolymer material with the highest compressive strength was found as 76.0 MPa (28-days) on the mixture produced with L/M ratio of 20% by weight; the alkaline solution consisted of a mixture of Na2SiO3 and 12 M NaOH in weight ratio of 2 by curing at 70 degrees C for 24 hrs. However, test results showed that there was an optimum limit for the alkaline solution ratio, such that exceeding this limit gave the reverse effect for the strength characteristics of the geopolymer material.
dc.description.sponsorshipRiga Tech Univ, Fac Civil Engn,Brno Univ Technol
dc.description.sponsorshipEuropean Commission [02, ELAC2015/T02-0721]; European Union; Turkish Scientific and Technological Research Council of Turkey (TUBITAK); Turkish project [116Y549]
dc.description.sponsorshipThis study is a part of the project Development of eco-friendly composite materials based on geopolymer matrix and reinforced with waste fibers funded by the European Commission, within the 7th Framework Programme for Research and Technology Development (FP7), Topic #02: Waste management, recycling and urban mining (Project No. ELAC2015/T02-0721) under the ERANet-LAC: Latin America, Caribbean and European Union and supported by a grant of the Turkish Scientific and Technological Research Council of Turkey (TUBITAK). The Turkish project number is 116Y549. We thank Turan Sevki Koker, Arife Gozde Akan, Pervin Nas and Betul Dikkaya for valuable contribution in experimental parts of this study.
dc.identifier.doi10.1088/1757-899X/660/1/012003
dc.identifier.issn1757-8981
dc.identifier.scopus2-s2.0-85078239247
dc.identifier.scopusqualityN/A
dc.identifier.urihttps://doi.org/10.1088/1757-899X/660/1/012003
dc.identifier.urihttps://hdl.handle.net/11480/13832
dc.identifier.volume660
dc.identifier.wosWOS:000562127800003
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherIop Publishing Ltd
dc.relation.ispartof4th International Conference on Innovative Materials, Structures and Technologies (Imst 2019)
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241106
dc.subjectStrength
dc.titleThe effect of alkali activation solutions with different water glass/NaOH solution ratios on geopolymer composite materials
dc.typeConference Object

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