Comparison of concrete rheometers:

Beaupré, Denis; Chapdelaine, F; Domone, Peter; Koehler, Eric; Shen, Lin; Sonebi, Mohamed; Struble, Leslie J.; Tepke, David G; Wallevik, JE; Wallevik, Ólafur H.

doi:10.6028/nist.ir.7154

Cited by 65 publications

(18 citation statements)

References 9 publications

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“…Due to the lack of knowledge of the function f , the true or absolute plastic viscosity cannot be known with low uncertainty. This could explain why it was not possible to compare the absolute values of the plastic viscosity obtained with the concrete rheometer during the round robin test [1,2]. …”

Section: Theoretical Approachmentioning

confidence: 99%

“…These rheometers were compared in 2000 during a round-robin test [1]. It was found that although good empirical correlations could be found between the rheometers, the absolute values of the rheological parameters depended on the instrument used.…”

Section: Introductionmentioning

confidence: 99%

“…It was shown by a round-robin test held in 2000 [1,2] that different rheometer designs gave different values of viscosity for the same concrete. While empirical correlation between different rheometers was possible, for a procedure that is supposed to “scientifically” improve on the empirical slump tests, this situation is unsatisfactory.…”

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confidence: 99%

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Relating fresh concrete viscosity measurements from different rheometers

Ferraris¹,

Martys²

2003

J. Res. Natl. Inst. Stand. Technol.

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Concrete rheological properties need to be properly measured and predicted in order to characterize the workability of fresh concrete, including special concretes such as self-consolidating concrete (SCC). It was shown by a round-robin test held in 2000 [1,2] that different rheometer designs gave different values of viscosity for the same concrete. While empirical correlation between different rheometers was possible, for a procedure that is supposed to “scientifically” improve on the empirical slump tests, this situation is unsatisfactory. To remedy this situation, a new interpretation of the data was developed. In this paper, it is shown that all instruments tested could be directly and quantitatively compared in terms of relative plastic viscosity instead of the plastic viscosity alone. This should eventually allow the measurements from various rheometer designs to be directly calibrated against known standards of plastic viscosity, putting concrete rheometry and concrete workability on a sounder materials science basis.

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Section: Theoretical Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Relating fresh concrete viscosity measurements from different rheometers

Ferraris¹,

Martys²

2003

J. Res. Natl. Inst. Stand. Technol.

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“…Différents bétons ont été testés avec des rhéomètres à béton dans le cadre de deux campagnes d'essais comparatifs (Banfill et al, 2001 ;Ferraris et Brower, 2004). Pour la première, 12 bétons fermes et plastiques (avec des granulats roulés ou concassés, ajout de fluidifiant, ciment portland commercial CEMI 52,5) ont été testés.…”

Section: Exploitation Des Données Issues De La Littératureunclassified

“…Dans ce but, des appareils de mesure adaptés à ces fluides fermes ont déjà été développés et présentent généralement des géométries classiques mais de grande taille : vane test -appareil ICAR (Koeler, 2004 ;Koeler et al, 2005) -, outils tournantsTwo point test (Domone et al, 1999) -, appareil IBB (Baupré, 1994, cylindres coaxiaux -appareil BML (Wallevik, 1990 ;Wallewik et Gjorv, 1990)), plan-plan -BTRheom (De Larrard et al, 1993 ;De Larrard et al, 1996). Les résultats de ces tests sont généralement simplement interprétés en comparant les valeurs des paramètres rhéologiques estimés (seuil de plasticité, viscosité plastique ou consistance, index…) (Banfill et al, 2001 ;Ferraris et Brower, 2004).…”

Section: Introductionunclassified

Vers une réelle rhéométrie adaptée aux bétons frais

Lanos

Estellé

2009

European Journal of Environmental and Civil Engineering

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Theoretical calculation of self‐compacting concrete plastic viscosity

Benaicha

Burtschell

Alaoui³

et al. 2017

Structural Concrete

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During the concrete production, we attempt to adjust its viscosity to allow optimal implementation. In this article, we have proposed a correlation between the plastic viscosity of concrete, the time, and the characteristics of the flow final profile from the V‐Funnel coupled to a horizontal channel Plexiglas. The proposed approach, verified by experimental results, represents a simple, economical, and usable tool on building site, and it allows to characterize rheologically the concrete from its flow. The comparison between our approach and the experimental values of the plastic viscosity shows that, in a laboratory or on site, instead of using a rheometer, we can use our approach to characterize the rheological behavior of a self‐compacting concrete.

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Comparison of concrete rheometers:

Cited by 65 publications

References 9 publications

Relating fresh concrete viscosity measurements from different rheometers

Relating fresh concrete viscosity measurements from different rheometers

Vers une réelle rhéométrie adaptée aux bétons frais

Theoretical calculation of self‐compacting concrete plastic viscosity

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