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Marina Neophytou, Stella Pourgouri, Antonis Kanellopoulos, Michael Petrou, Ioannis Ioannou, Georgios Georgiou, Andreas Alexandrou
Determination of the rheological parameters of self-compacting concrete matrix using slump flow test
Appl. Rheol. 20:6 (2010) 62402 (12 pages)
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The classification of a concrete mixture as self-compacting (SCC) is performed by a series of empirical characterization tests
that have been designed to assess not only the flowability of the mixture but also its segregation resistance and filling ability.
The objective of the present work is to correlate the rheological parameters of SCC matrix, yield stress and plastic viscosity,
to slump flow measurements. The focus of the slump flow test investigation was centered on the fully yielded flow
regime and an empirical model relating the yield stress to material and flow parameters is proposed. Our experimental data
revealed that the time for a spread of 500 mm which is used in engineering practice as reference for measurement parameters,
is an arbitrary choice. Our findings indicate that the non-dimensional final spread is linearly related to the non-dimensional
yield-stress. Finally,there are strong indications that the non-dimensional viscosity of the mixture is associated with
the non-dimensional final spread as well as the stopping time of the slump flow; this experimental data set suggests an
exponential decay of the final spread and stopping time with viscosity.
► Cite this publication as follows:
Neophytou M, Pourgouri S, Kanellopoulos A, Petrou M, Ioannou I, Georgiou GC, Alexandrou A: Determination of the rheological parameters of self-compacting concrete matrix using slump flow test, Appl. Rheol. 20 (2010) 62402.
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