CUED Publications database

Determination of the rheological parameters of self-compacting concrete matrix using slump flow test

Neophytou, MKA and Pourgouri, S and Kanellopoulos, AD and Petrou, MF and Ioannou, I and Georgiou, G and Alexandrou, A (2010) Determination of the rheological parameters of self-compacting concrete matrix using slump flow test. Applied Rheology, 20. 62402-. ISSN 1430-6395

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Abstract

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. © Appl. Rheol.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div D > Geotechnical and Environmental
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:13
Last Modified: 01 Oct 2020 02:36
DOI: 10.3933/ApplRheol-20-62402