Comprehensive analysis of experimental and numerical results of bond strength and mechanical properties of fly ash based GPC and OPC concrete

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dc.authorid0000-0002-8091-4990
dc.authorid0000-0003-2121-7033
dc.authorid0000-0001-9739-4699
dc.authorid0000-0001-5148-8753
dc.contributor.authorAslanbay, Yuksel Gul
dc.contributor.authorAslanbay, Huseyin Hilmi
dc.contributor.authorOzbayrak, Ahmet
dc.contributor.authorKucukgoncu, Hurmet
dc.contributor.authorAtas, Oguzhan
dc.date.accessioned2026-01-24T12:31:08Z
dc.date.available2026-01-24T12:31:08Z
dc.date.issued2024
dc.departmentAlanya Alaaddin Keykubat Üniversitesi
dc.description.abstractNowadays, materials in the more environmentally friendly waste product class, which can be an alternative to standard Portland cement (OPC), are frequently used by researchers in concrete production. One of these, namely fly ash-based geopolymer concrete (GPC), should demonstrate its superiority over OPC in terms of chemical and mechanical properties to enhance its utilization. One of the mechanical properties of GPC is the bond strength between reinforcement and concrete. In this study, it was aimed to obtain bond strengths by performing tensile tests on GPC samples with varying sodium silicate/sodium hydroxide (SS/SH) and alkaline activator/fly ash (AA/FA) ratios. A pull-out experimental setup was prepared in accordance with RILEM Standard. Experimental results were compared with numerical results obtained from finite element models designed in ABAQUS software and were found to be compatible. When evaluated in terms of peak load and max bond stress values, GPC is superior to OPC. Compared to OPC an increase in the SS/SH ratio enhances mechanical properties such as compressive strength and bond load, whereas an increase in the AA/FA ratio with a value of 0.7 in the series has the opposite effect. In the finite element models, stress values are higher in samples with an AA/FA ratio of 0.5 compared to other ratios. An increase in the AA/FA ratio leads to a decrease in stress values. The analytical results are demonstrated that the proposed model can be utilized to assess the bond strength performance between traditional reinforced concrete and fly ash-based geopolymer concrete. Additionally, as a result of experimental studies, a formula that can be used to estimate bond strength based on GPC compressive strength and shows the superiority of GPC compared to studies in the literature has been proposed.
dc.description.sponsorshipTUBITAK (The Scientific and Technological Research Council of Turkey) [121M236]
dc.description.sponsorshipThis research was supported by TUBITAK (The Scientific and Technological Research Council of Turkey) under grant number 121M236.
dc.identifier.doi10.1016/j.conbuildmat.2024.135175
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-85185264266
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2024.135175
dc.identifier.urihttps://hdl.handle.net/20.500.12868/5667
dc.identifier.volume416
dc.identifier.wosWOS:001178147400001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofConstruction and Building Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260121
dc.subjectGeopolymer concrete
dc.subjectLow calcium fly ash
dc.subjectPull -out test
dc.subjectBond strength
dc.subjectFinite element method
dc.titleComprehensive analysis of experimental and numerical results of bond strength and mechanical properties of fly ash based GPC and OPC concrete
dc.typeArticle

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