Synthesis, Application and Effect of Hybrid Nanocomposites Based on Hydrogel and Nanoclay in Cement-Mortars

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dc.contributor.authorWatanuki Filho, Adhemar
dc.contributor.authorHiguti, Ricardo Tokio [UNESP]
dc.contributor.authorMoura, Marcia Regina de [UNESP]
dc.contributor.authorAouada, Fauze Ahmad [UNESP]
dc.contributor.institutionScience and Technology of Sao Paulo (IFSP)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T15:14:24Z
dc.date.available2023-07-29T15:14:24Z
dc.date.issued2022-11-01
dc.description.abstractHybrid nanocomposite hydrogels, as admixtures for internal curing of cementitious materials, have been widely studied. This study analyzes the effect of applying 0.5% (wt/wt cement) of pre-soaked hydrogels based on polyacrylamide, carboxymethylcellulose, and three different concentrations of Cloisite-Na+ (0, 10, and 20% wt/wt) on the fresh and hardened properties of cementitious mortars. In general, all mortars with hydrogel decreased the consistency index, mainly M20, due to the high concentration of Cloisite-Na+ that modifies the release kinect of the hydrogel. The results showed a slight variation, with an overall average value of 99% water retention in all mortars. This behavior is due to the portion of hydrogel-mortars dosage water retained to reduce the availability of free water in the mixture because this amount of water is stored, a priori, within the polymer particles. At 28 d, the mortars produced with hydrogels containing 20% of nanoclay (M20) exhibit mechanical behavior similar to the reference mortar (M), which corroborates the percentage of voids found. Scanning electron microscope images confirm that the M and M20 mortars are uniform and possess few pores or microcracks. Thus, these hybrid hydrogels have the potential to be innovative materials for water control improvements in cementitious materials technology.en
dc.description.affiliationDepartment of Civil Construction Federal Institute of Education Science and Technology of Sao Paulo (IFSP), Alameda Tucurui, 164, Zona Norte
dc.description.affiliationDepartment of Electrical Engineering School of Engineering Sao Paulo State University (UNESP), Avenida Brasil, 56, Centro
dc.description.affiliationGrupo de Compósitos e Nanocompósitos Híbridos (GCNH) Department of Physics and Chemistry School of Engineering Sao Paulo State University (UNESP), Avenida Brasil, 56, Centro
dc.description.affiliationUnespDepartment of Electrical Engineering School of Engineering Sao Paulo State University (UNESP), Avenida Brasil, 56, Centro
dc.description.affiliationUnespGrupo de Compósitos e Nanocompósitos Híbridos (GCNH) Department of Physics and Chemistry School of Engineering Sao Paulo State University (UNESP), Avenida Brasil, 56, Centro
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCNPq: 312414/2018-8
dc.description.sponsorshipIdCNPq: 312530/2018-8
dc.description.sponsorshipIdCNPq: 316174/2021-1
dc.description.sponsorshipIdCNPq: 405680/2016-3
dc.identifierhttp://dx.doi.org/10.3390/polym14214564
dc.identifier.citationPolymers, v. 14, n. 21, 2022.
dc.identifier.doi10.3390/polym14214564
dc.identifier.issn2073-4360
dc.identifier.scopus2-s2.0-85141843210
dc.identifier.urihttp://hdl.handle.net/11449/249374
dc.language.isoeng
dc.relation.ispartofPolymers
dc.sourceScopus
dc.subjectcivil construction
dc.subjectnanocomposite
dc.subjectpolymer absorbent
dc.titleSynthesis, Application and Effect of Hybrid Nanocomposites Based on Hydrogel and Nanoclay in Cement-Mortarsen
dc.typeArtigo
unesp.author.orcid0000-0002-2534-5553[3]
unesp.author.orcid0000-0002-6870-6961[4]
unesp.departmentEngenharia Elétrica - FEISpt
unesp.departmentFísica e Química - FEISpt

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Ilha Solteira - FEIS - Faculdade de Engenharia