A unique procedure for finding the rheological properties of fresh Portland cement concrete using concrete shear tests

Author(s): S. Girish, B.S. Santosh
Paper category: Conference
Book title: Rheology and processing of Construction Materials – 7th RILEM International Conference on Self-Compacting Concrete and 1st RILEM International Conference on Rheology and Processing of Construction Materials
Editor(s): Nicolas Roussel and Hela Bessaies-Bey
Print ISBN: 978-2-35158-137-7
e-ISBN: 978-2-35158-138-4
Publisher: RILEM Publications SARL
Pages: 365-372
Total Pages: 8
Language: English

Abstract: 
The lack of viable concrete workability test method has aroused the need to characterize fresh concrete by its rheological properties based on material science approach to overcome the inadequacies of traditional empirical tests. Rheological properties are characterized by flow behavior and are described by Bingham parameters. Rheometers are used to find the rheological properties which use high torque and the stimulus provided is dynamic and no concurrence in the measured values. This paper describes a unique procedure hitherto not attempted previously for the determination of rheological properties of fresh concrete using a newly designed and fabricated concrete shear box. The uniqueness is that after finding the peak shear stress, shear stress at zero normal stress and zero displacement were found before finding the Bingham parameters. The significance is the reproducibility of the test results, besides low shear rate applied to the concrete and static condition of the test.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00