Geopolymer concrete with high strength, workability and setting time using recycled steel wires and basalt powder

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dc.contributor.authorCelik, Ali Ihsan
dc.contributor.authorOzkilic, Yasin Onuralp
dc.date.accessioned2024-02-23T14:29:23Z
dc.date.available2024-02-23T14:29:23Z
dc.date.issued2023
dc.departmentNEÜen_US
dc.description.abstractGeopolymer concrete production is interesting as it is an alternative to portland cement concrete. However, workability, setting time and strength expectations limit the sustainable application of geopolymer concrete in practice. This study aims to improve the production of geopolymer concrete to mitigate these drawbacks. The improvement in the workability and setting time were achieved with the additional use of NaOH solution whereas an increase in the strength was gained with the addition of recycled steel fibers from waste tires. In addition, the use of 25% basalt powder instead of fly ash and the addition of recycled steel fibers from waste tires improved its environmental feature. The samples with steel fiber ratios ranging between 0.5% and 5% and basalt powder of 25%, 50% and 75% were tested under both compressive and flexure forces. The compressive and flexural capacities were significantly enhanced by utilizing recycled steel fibers from waste tires. However, decreases in these capacities were detected as the basalt powder ratio increased. In general, as the waste wire ratio increased, the compressive strength gradually increased. While the compressive strength of the reference sample was 26 MPa, when the wire ratio was 5%, the compressive strength increased up to 53 MPa. With the addition of 75% basalt powder, the compressive strength decreases by 60%, but when the 3% wire ratio is reached, the compressive strength is obtained as in the reference sample. In the sample group to which 25% basalt powder was added, the flexural strength increased by 97% when the waste wire addition rate was 5%. In addition, while the energy absorption capacity was 0.66 kN in the reference sample, it increased to 12.33 kN with the addition of 5% wire. The production phase revealed that basalt powder and waste steel wire had a significant impact on the workability and setting time. Furthermore, SEM analyses were performed.en_US
dc.identifier.doi10.12989/scs.2023.46.5.689
dc.identifier.endpage707en_US
dc.identifier.issn1229-9367
dc.identifier.issn1598-6233
dc.identifier.issue5en_US
dc.identifier.scopus2-s2.0-85153675630en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage689en_US
dc.identifier.urihttps://doi.org/10.12989/scs.2023.46.5.689
dc.identifier.urihttps://hdl.handle.net/20.500.12452/14663
dc.identifier.volume46en_US
dc.identifier.wosWOS:000956220600008en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherTechno-Pressen_US
dc.relation.ispartofSteel And Composite Structuresen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCompressiveen_US
dc.subjectConcreteen_US
dc.subjectFlexuralen_US
dc.subjectGeopolymeren_US
dc.subjectRecyclingen_US
dc.subjectSetting Timeen_US
dc.subjectWaste Steel Fibersen_US
dc.subjectWorkabilityen_US
dc.titleGeopolymer concrete with high strength, workability and setting time using recycled steel wires and basalt powderen_US
dc.typeArticleen_US

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