Rheological characteristics of aerial lime-based pastes with addition of biopolymers

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dc.contributor.authorŽižlavský, Tomášcs
dc.contributor.authorVyšvařil, Martincs
dc.contributor.authorRovnaníková, Pavlacs
dc.coverage.issue1cs
dc.coverage.volume385cs
dc.date.issued2018-07-16cs
dc.description.abstractViscosity enhancing admixtures are widely used to improve the properties of concrete and ready-mix mortars. This study focuses on the influence of biopolymer (sodium salt of alginic acid, carrageenan, diutan gum, gellan gum, and xanthan gum) in doses of 1, 5, and 10 ‰ on the rheological properties of aerial lime-based pastes. The measurements were carried out on the Discover HR-1 hybrid rheometer with DIN concentric cylinders geometry. On the pastes the flow properties as yield stress, fluidity index and consistency coefficient as well as the viscoelastic properties (complex modulus, loss tangent, critical and flow strain) were studied. All pastes studied expressed shear-thinning behaviour and the flow curves indicated rheopectic character of samples. The significant differences in effectivity of admixtures used were observed. Xanthan and gellan gums were found less effective than the three others in influencing the rheology of aerial lime-based paste while diutan gum was so effective, that the future research with lower doses of the admixture are recommended to better explain its impact on the rheological properties.en
dc.formattextcs
dc.format.extent1-6cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationIOP Conference Series: Materials Science and Engineering. 2018, vol. 385, issue 1, p. 1-6.en
dc.identifier.doi10.1088/1757-899X/385/1/012067cs
dc.identifier.issn1757-8981cs
dc.identifier.orcid0000-0002-9136-9844cs
dc.identifier.orcid0000-0002-4325-6087cs
dc.identifier.orcid0000-0002-6732-788Xcs
dc.identifier.other148965cs
dc.identifier.researcheridAAF-7443-2019cs
dc.identifier.scopus57192982770cs
dc.identifier.scopus32267705100cs
dc.identifier.scopus6506551687cs
dc.identifier.urihttp://hdl.handle.net/11012/137127
dc.language.isoencs
dc.publisherIOP Publishingcs
dc.relation.ispartofIOP Conference Series: Materials Science and Engineeringcs
dc.relation.urihttp://iopscience.iop.org/article/10.1088/1757-899X/385/1/012067cs
dc.rightsCreative Commons Attribution 3.0 Unportedcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1757-8981/cs
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/cs
dc.subjectaerial lime-based mortaren
dc.subjectcarrageenanen
dc.subjectdiutan gumen
dc.subjectxanthan gumen
dc.subjectalginic acid sodium salten
dc.subjectyield stressen
dc.subjectviscoelastic propertiesen
dc.titleRheological characteristics of aerial lime-based pastes with addition of biopolymersen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-148965en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:44:20en
sync.item.modts2025.01.17 16:51:22en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav chemiecs
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