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Author Feys, Dimitri ♦ Wallevik, Jon E. ♦ Yahia, Ammar ♦ Khayat, Kamal H. ♦ Wallevik, Olafur H.
Source SpringerLink
Content type Text
Publisher Springer Netherlands
File Format PDF
Copyright Year ©2012
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations
Subject Keyword Rheology ♦ Modified Bingham ♦ Yield stress ♦ Shear-thickening ♦ Coaxial cylinders rheometer ♦ Structural Mechanics ♦ Materials Science ♦ Theoretical and Applied Mechanics ♦ Operating Procedures, Materials Treatment ♦ Civil Engineering ♦ Building Materials
Abstract The determination of the exact rheological properties, in fundamental units, of cementitious materials has become gradually a necessary step in the domain of concrete science. Several types of rheometers and their corresponding transformation equations are described in the literature. In this paper, the Reiner–Riwlin transformation equation, valid for coaxial cylinders rheometers, is developed for the modified Bingham model, which is an extension of the Bingham model with a second order term in the shear rate. The established transformation is shown to be compatible with the Reiner–Riwlin equation for the Bingham and Herschel–Bulkley models. Its validation is further proven by means of numerical simulations applied on experimental data. The yield stress values for the three rheological models (applied on the same experimental data) are compared with the yield stress calculated by means of slump flow values. Results showed that the modified Bingham model results in the most stable yield stress values, which are independent of the non-linear behaviour.
ISSN 13595997
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2012-07-25
Publisher Place Dordrecht
e-ISSN 18716873
Journal Materials and Structures
Volume Number 46
Issue Number 1-2
Page Count 23
Starting Page 289
Ending Page 311


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Source: SpringerLink