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Accurate estimation of rheological properties of self-compacting concrete

Karihaloo, Bhushan, Kulasegaram, Sivakumar and Badry, Firas 2015. Accurate estimation of rheological properties of self-compacting concrete. Journal of the Chinese Ceramic Society 43 (10) , pp. 1396-1400. 10.14062 / j.issn.0454-5648.2015.10.09

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Abstract

We describe how the rheological properties of self-compacting concrete (SCC), namely its yield stress and plastic viscosity can be accurately estimated. Currently these properties are measured using a rheometer, but these measurements are unreliable because they are very different depending on the rheometer used. This is to do with the heterogeneous nature of the SCC mix. To get a reliable estimate of these properties, a micromechanical procedure is described for estimating the plastic viscosity of the heterogeneous mix from the plastic viscosity of the homogeneous viscous paste and the mix composition. The yield stress on the other hand is estimated in an inverse manner from the measured t500 and flow spread of the mix in a cone flow test using the three-dimensional smooth particle hydrodynamics (SPH) method for simulating the flow of SCC.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Publisher: Chinese Ceramic Society
ISSN: 0454-5648
Last Modified: 11 Mar 2019 16:37
URI: http://orca.cf.ac.uk/id/eprint/84150

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