The study of strength behaviour of zeolite in cemented paste backfill

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dc.authoridEKER, HASAN/0000-0003-2644-4681
dc.authoridBascetin, Atac/0000-0001-7533-4599
dc.contributor.authorEker, Hasan
dc.contributor.authorBascetin, Atac
dc.date.accessioned2024-09-29T16:05:17Z
dc.date.available2024-09-29T16:05:17Z
dc.date.issued2022
dc.departmentKarabük Üniversitesien_US
dc.description.abstractIn the present study, reference samples were prepared using ore preparation facility tailings taken from the copper mine (Kure, Kastamonu), Portland cement (PC) in certain proportions (3 wt%, 5 wt%, 7 wt%, 9wt% and 11 wt%), and water. Then natural zeolite taken from the Bigadic Region was mixed in certain proportions (10 wt%, 20 wt%, 30 wt% and 40 wt%) for each cement ratio, instead of the PC, to prepare zeolite-substituted CPB samples. Thus, the effect of using Zeolite instead of PC on CPB's strength was investigated. The obtained CPB samples were kept in the curing cabinet at a temperature of 25???C and at least 80% humidity, and they were subjected to the Uniaxial Compressive Strength (UCS) test at the end of the curing periods of 3, 7, 14, 28, 56, and 90 days. Except for the 3 wt% cement ratio, zeolite substitution was observed to increase the compressive strength in all mixtures. Also, the liquefaction risk limit for paste backfill was achieved for all mixtures, and the desired strength limit value (0.7 MPa) was achieved for all mixtures with 28 days of curing time and 7 wt%, 9 wt%, 11 wt% cement ratios and 5% cement ??? 10% zeolite substituted mixture. Moreover, the limit value (4 MPa) required for use as roof support was obtained only for mixtures with 11% cement ??? 10% and 20% zeolite content. Generally, zeolite substitution seems to be more effective in early strength (up to 28th day). It has been determined that the long-term strength losses of zeolite-substituted paste backfill mixtures were caused by the reaction of sulfate and hydration products to form secondary gypsum, ettringite, and iron sulfate.en_US
dc.description.sponsorship[FDK-2018-24707]en_US
dc.description.sponsorshipThis study was funded by Istanbul UniversityCerrahpasa with the project number FDK-2018-24707.en_US
dc.identifier.doi10.12989/gae.2022.29.4.421
dc.identifier.endpage434en_US
dc.identifier.issn2005-307X
dc.identifier.issn2092-6219
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-85130473854en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage421en_US
dc.identifier.urihttps://doi.org/10.12989/gae.2022.29.4.421
dc.identifier.urihttps://hdl.handle.net/20.500.14619/6618
dc.identifier.volume29en_US
dc.identifier.wosWOS:000799577600004en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherTechno-Pressen_US
dc.relation.ispartofGeomechanics and Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectcementen_US
dc.subjectcemented paste backfill (CPB)en_US
dc.subjecttailingsen_US
dc.subjectuniaxial compressive strength (UCS)en_US
dc.subjectzeoliteen_US
dc.titleThe study of strength behaviour of zeolite in cemented paste backfillen_US
dc.typeArticleen_US

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