Rodyti trumpą aprašą

dc.contributor.authorDu, Yiying,
dc.contributor.authorPundienė, Ina,
dc.contributor.authorPranckevičienė, Jolanta,
dc.contributor.authorZujevs, Aleksejs,
dc.contributor.authorKorjakins, Aleksandrs,
dc.date.accessioned2023-12-22T07:05:48Z
dc.date.available2023-12-22T07:05:48Z
dc.date.issued2023.
dc.identifier.urihttps://etalpykla.vilniustech.lt/xmlui/handle/123456789/153535
dc.description.abstractWith the development of nanotechnology, nanomaterials have been introduced to improve the engineering properties of cement-based building materials. An abundant number of studies have been carried out on normal-weight concrete using multi-walled carbon nanotubes (MWCNTs) or nano-silica (NS) and have proven their effectiveness. Nevertheless, still very few investigations are available in terms of lightweight cement-based materials, especially when MWCNTs and NS are binarily incorporated. Thus, in this study, fly ash cenospheres (FACs) according to cement weight were applied as lightweight fine aggregates to produce lightweight mortar (LWM). MWCNTs at 0.05, 0.15, and 0.45% and NS at 0.2 and 1.0% were binarily added as modifiers. Compressive and flexural strengths were tested to investigate mechanical behaviors. A water absorption test was conducted, together with scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP), to identify the impacts of the nano-additives on the pore structure of LWM. The following results were obtained: MWCNTs and NS demonstrated synergic effects on enhancing the mechanical properties of LWM. MWCNTs exerted positive impacts on reducing the porosity and improving the pore distribution at low dosages of 0.05 and 0.15%. The hybrid addition of NS further transformed large voids into small ones and introduced closed pores.eng
dc.formatPDF
dc.format.extentp. 1-17.
dc.format.mediumtekstas / txt
dc.language.isoeng
dc.relation.isreferencedbyScience Citation Index Expanded (Web of Science)
dc.relation.isreferencedbyScopus
dc.source.urihttps://www.mdpi.com/2079-4991/13/22/2942
dc.titleStudy on the pore structure of lightweight mortar with nano-additives /
dc.typeStraipsnis Web of Science DB / Article in Web of Science DB
dcterms.accessRightsThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
dcterms.licenseCreative Commons – Attribution – 4.0 International
dcterms.references56
dc.type.pubtypeS1 - Straipsnis Web of Science DB / Web of Science DB article
dc.contributor.institutionVilniaus Gedimino technikos universitetas
dc.contributor.institutionRiga Technical University
dc.contributor.facultyStatybos fakultetas / Faculty of Civil Engineering
dc.contributor.departmentStatybinių medžiagų institutas / Institute of Building Materials
dc.subject.researchfieldT 008 - Medžiagų inžinerija / Material engineering
dc.subject.vgtuprioritizedfieldsSD0202 - Aplinką tausojančios statybinės medžiagos ir technologijos / Low emissions building materials and technologies
dc.subject.ltspecializationsL104 - Nauji gamybos procesai, medžiagos ir technologijos / New production processes, materials and technologies
dc.subject.enfly ash cenospheres
dc.subject.enlightweight mortar
dc.subject.ennano-additives
dc.subject.enpore structure
dc.subject.enstrength
dcterms.sourcetitleNanomaterials.
dc.description.issueiss. 22
dc.description.volumevol. 13
dc.publisher.nameMDPI
dc.publisher.cityBasel
dc.identifier.doi10.3390/nano13222942
dc.identifier.elaba184349873


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