Innovative use of copper mine tailing as an additive in cement mortar

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dc.contributor.authorArunachalam, Krishna Prakash
dc.contributor.authorAvudaiappan, Siva
dc.contributor.authorMaureira, Nelson
dc.contributor.authorGarcia Filho, Fabio Da Costa
dc.contributor.authorMonteiro, Sergio Neves
dc.contributor.authorBatista, Isabela Devesa
dc.contributor.authorde Azevedo, Afonso R. G.
dc.date.accessioned2025-01-20T17:26:43Z
dc.date.available2025-01-20T17:26:43Z
dc.date.issued2023
dc.description.abstractThis research assesses the feasibility of recycling copper mine tailings (CMT) by analyzing the durability and mechanical characteristics of cement mortar using these tailings as filler additives. CMT are mineral wastes generated during the process of mining. In this work, specimens of cement mortar were incorporated with up to 30 wt.% of a CMT. Bulk density, dynamic modulus of elasticity, apparent density, ultrasonic pulse velocity, flexural and compressive strengths tests were evaluated. Total amount of voids, sorptivity, water ab-sorption and chemical resistance tests were also obtained to evaluate the mortar durability. When 10 wt.% CMT was incorporated, overall amount of voids in the mortar was reduced by 20% and mechanical performance was improved by 16% after 28 days. The flexural strength of the mortar was also found to increase, with the 20% wt.% CMT mortar incorporation reaching a flexural strength of 5.89 MPa. Thus represents 16% increase compared to the control 0% CMT strength. The results indicated that there was not a perfect correlation be-tween these results and the mechanical strength results for the 15 and 20 wt.% CMT mortars. In addition, the CMT acts as a protective barrier against harmful chemicals. The results of this research indicate that reusing CMT by incorporating into cement mortar is a feasible method for their recycling. Mortar made with as much as 15 wt.% CMT presented the same strength and durability as mortar with traditional sand and cement. (c) 2023 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.jmrt.2023.06.066
dc.identifier.eissn2214-0697
dc.identifier.issn2238-7854
dc.identifier.urihttps://doi.org/10.1016/j.jmrt.2023.06.066
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91559
dc.identifier.wosidWOS:001092043600001
dc.language.isoen
dc.pagina.final2274
dc.pagina.inicio2261
dc.revistaJournal of materials research and technology-jmr&t
dc.rightsacceso restringido
dc.subjectCement
dc.subjectCopper tailing
dc.subjectUltrasonic pulse velocity
dc.subjectSorptivity
dc.subject.ods12 Responsible Consumption and Production
dc.subject.odspa12 Producción y consumo responsable
dc.titleInnovative use of copper mine tailing as an additive in cement mortar
dc.typeartículo
dc.volumen25
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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