Analysis of Shear Rate inside a Concrete Truck Mixer

Author(s): Jon E. Wallevik, Olafur H. Wallevik
Paper category: Conference
Book Title: 8th International RILEM Symposium on Self-Compacting Concrete - SCC 2016
Editor: Kamal H. Khayat
ISBN: 978-2-35158-156-8
e-ISBN: 978-2-35158-157-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 233-241
Total Pages: 9
Language: English

Abstract: In addition to the mixing energy applied to the fresh concrete (i.e. shearing during mixing), the shear history after mixing is also important. This applies especially for binder rich self-compacting concrete. This is due to the influence that the binder has on the overall concrete in terms of thixotropic- and structural breakdown behavior. In this work, the shear rate is analyzed inside a drum of a concrete truck mixer. The objective is to better understand the effect of transport of fresh concrete, from the ready mix plant to the building site. The shear rate analysis is done as a function of different drum charge volume and drum rotational speed. Also, the effect of yield stress and plastic viscosity is analyzed.

Online publication: 2016
Publication Type: full_text
Public price (Euros): 0.00