Rheology as tool to master fresh properties of concretes

Author(s): Andraž Hočevar and Violeta Bokan Bosiljkov
Paper category: Proceedings of the International RILEM Conference Materials, Systems and Structures in Civil Engineering 2016 Segment on Fresh Concrete
Editor(s): Lars N. Thrane, Claus Pade, Oldrich Svec and Nicolas Roussel
ISBN: 978-2-35158-184-1
e-ISBN: 978-2-35158-185-8
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 166-175
Total Pages: 10
Language : English

Abstract: The paper analyses the influence of concrete mixture constituents’ change on rheological properties of concretes in fresh state. The concrete mixtures are made from local Slovenian basic materials which include cement, aggregate and different SCMs, and by using chemical admixtures available on the Slovenian market. For the analysis we primarily use results of measurements, obtained by a rheometer ConTec Viscometer 5. However, the analyses also include results of slump tests with which we estimate the workability of fresh concretes. The results are presented in two different ways. The first is in the form of a rheograph, which shows the relation between yield shear stress and plastic viscosity in case of the constituent’s variation. In this way we can demonstrate the variation of both rheological parameters due to selected changes of concrete mixture on a single diagram. The second is in the form of dependence between yield shear stress and workability in case of the constituent’s variation

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00