dc.contributorUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-29T08:36:16Z
dc.date.accessioned2022-12-20T02:56:25Z
dc.date.available2022-04-29T08:36:16Z
dc.date.available2022-12-20T02:56:25Z
dc.date.created2022-04-29T08:36:16Z
dc.date.issued2021-12-01
dc.identifierJournal of Building Engineering, v. 44.
dc.identifier2352-7102
dc.identifierhttp://hdl.handle.net/11449/229858
dc.identifier10.1016/j.jobe.2021.103206
dc.identifier2-s2.0-85118778782
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5409992
dc.description.abstractThe rheological characterization of cement pastes, mortars and concretes considers the rheological parameters of complex suspensions, composed by different materials, which interact both chemically, and physically. In addition, distinct test conditions and diverse mixture compositions may also interfere on determining the composites’ rheological properties. Along these lines, this work evaluates the test protocol and the rheological model influence on the rheological characterization of cement pastes. To do so, we established four different test protocols, with two maximum shear rates (50 and 100 s−1) and two distinct shearing methods (single-staged and multiple-staged). Bigham, modified Bingham and Herschel-Bulkley models were used to fit the experimental data. The water/cement mass ratio of the studied pastes ranged between 0.40 and 0.65. Our analysis indicates that the test protocol and the rheological model exerts significant influence on determining rheological parameters. In general, Herschel-Bulkley model showed better fitting to experimental data. More reproductive results were verified on the multiple-staged shearing with a maximum shear rate of 100 s−1.
dc.languageeng
dc.relationJournal of Building Engineering
dc.sourceScopus
dc.subjectCement paste
dc.subjectRheology
dc.subjectRheometric test protocol
dc.subjectYield stress
dc.titleTest protocol and rheological model influence on determining the rheological properties of cement pastes
dc.typeArtículos de revistas


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