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dc.creatorMendoza Reales O.A.spa
dc.creatorOcampo C.spa
dc.creatorArias Jaramillo Y.P.spa
dc.creatorOchoa Botero J.C.spa
dc.creatorQuintero J.H.spa
dc.creatorSilva E.C.C.M.spa
dc.creatorToledo Filho R.D.spa
dc.date.accessioned2018-10-31T13:44:22Z
dc.date.available2018-10-31T13:44:22Z
dc.date.created2018
dc.identifier.issn16878086
dc.identifier.urihttp://hdl.handle.net/11407/4891
dc.descriptionDecoupling the individual effects of multiwalled carbon nanotubes (MWCNTs) and surfactants when used as reinforcement materials in cement-based composites is aimed in this study. Powder MWCNTs were dispersed in deionized water using different types of surfactants as chemical dispersing agents and an ultrasonic tip processor. Cement pastes with carbon nanotubes additions of 0.15% by mass of cement were produced in two steps: first, the MWCNT/surfactant dispersions were combined with the mixing water, and then, cement was added and mixed until a homogeneous paste was obtained. Mechanical properties of the pastes cured at 7 days were measured, and their fracture behavior was characterized using the linear elastic finite element analysis. It was found that the reinforcing effect of MWCNT was masked by the negative effect of surfactants in the cement matrix; nevertheless, nanotubes were capable of increasing both stress and strain capacity of the composite by controlling the crack propagation process at the tip of the crack. © 2018 Oscar A. Mendoza Reales et al.spa
dc.language.isoeng
dc.publisherHindawi Limitedspa
dc.relation.isversionofhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85049300564&doi=10.1155%2f2018%2f2057940&partnerID=40&md5=f555e0cf68fcafd43064fcea160a9644spa
dc.sourceScopusspa
dc.titleReinforcing Effect of Carbon Nanotubes/Surfactant Dispersions in Portland Cement Pastesspa
dc.typeArticleeng
dc.rights.accessrightsinfo:eu-repo/semantics/restrictedAccess
dc.publisher.programCiencias Básicasspa
dc.contributor.affiliationMendoza Reales, O.A., Universidade Federal Do Rio de Janeiro;Ocampo, C., Universidad Nacional de Colombia;Arias Jaramillo, Y.P., Universidad Nacional de Colombia;Ochoa Botero, J.C., Universidad Nacional de Colombia;Quintero, J.H., Universidad de Medellín;Silva, E.C.C.M., Petrobras Petróleo Brasileiro S.A.;Toledo Filho, R.D., Universidade Federal Do Rio de Janeirospa
dc.identifier.doi10.1155/2018/2057940
dc.relation.citationvolume2018
dc.publisher.facultyFacultad de Ciencias Básicasspa
dc.relation.ispartofesAdvances in Civil Engineeringspa
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dc.type.driverinfo:eu-repo/semantics/article


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