Effect of mix dosage on rubberized concrete mechanical performance: a multivariable prediction model towards design provisions

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dc.article.number109451
dc.catalogadorjca
dc.contributor.authorGuíñez, Felipe
dc.contributor.authorSanta María, Hernán
dc.contributor.authorAraya-Letelier, Gerardo
dc.contributor.authorLincoleo, Jocelyn
dc.contributor.authorPalominos, Fabrizio
dc.date.accessioned2024-04-30T17:22:51Z
dc.date.available2024-04-30T17:22:51Z
dc.date.issued2024
dc.description.abstractThe accumulation of end-of-life tires generates significant environmental/economic/social problems worldwide; however, these tires can potentially be used in engineering applications when recycled as crumb rubber (CR). One possibility is to use CR as a replacement for river sand in concrete to reduce the disposal of CR and the use of sand as well as to improve some of concrete’s properties, such as thermal performance and carbon footprint at the expense of some compressive strength reduction. In this study, a novel and simple multivariable model was developed to predict the compressive strength reduction of rubberized concrete (RC) based on a dataset of 287 concrete mixtures from 38 different studies. The approach used in this study quantified the significance of the impact of 10 mix design variables on the evaluation of compressive strength reduction. The final model proposed in this paper considers six explanatory variables (i.e., volume replacement of sand by CR, CR quantity, fine aggregate quantity, coarse aggregate quantity, cement quantity, and water quantity) to predict the compressive strength reduction in which a logarithmic transformation was implemented to achieve a more precise model. The proposed model reached a coefficient of determination of 0.89, significantly better than other existing models with which the proposed model was compared, resulting in a highly accurate and yet easy-to-implement model. Finally, practical design considerations were provided to be used in concrete mix design or the design of minor structural elements.
dc.fechaingreso.objetodigital2024-09-03
dc.fuente.origenORCID
dc.identifier.doi10.1016/j.jobe.2024.109451
dc.identifier.urihttps://doi.org/10.1016/j.jobe.2024.109451
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/85384
dc.identifier.wosidWOS:001237656000001
dc.information.autorucEscuela de Construcción Civil; Araya Letelier, Gerardo Andres; 0000-0003-4252-1341; 124980
dc.language.isoen
dc.nota.accesocontenido parcial
dc.relation.uriJournal of Building Engineering
dc.rightsacceso restringido
dc.subjectRubberized concrete
dc.subjectCrumb rubber
dc.subjectReplacement of fine aggregate
dc.subjectVolume replacement
dc.subjectMechanical properties
dc.subject.ddc620
dc.subject.deweyIngenieríaes_ES
dc.subject.ods12 Responsible consuption and production
dc.subject.odspa12 Producción y consumo responsable
dc.titleEffect of mix dosage on rubberized concrete mechanical performance: a multivariable prediction model towards design provisions
dc.typeartículo
dc.volumen90
sipa.codpersvinculados124980
sipa.trazabilidadORCID;2024-04-29
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