Mixing self compacting concrete: mixers, mixing methods, mixing time

Author(s): B. Cazacliu
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: 57-64
Total Pages: 8
Language: English

Some main specificities of SCC manufacturing are detailed, mainly the proportion of non-compliant industrial batches, the influence of the mixer, mixing time and mixing method on the SCC characteristics.

Special attention is given to correctly define the mixing evolution description, i.e. the homogenization time, the stabilization time, the fluidity time and the characteristic time of the paste rheology evolution. Also, mixing systems principles are summarized and some important adimensional mixing numbers are specified: the number of turns and the Metzner and Otto constant Ks.

Besides, on the bases of literature data and experimental results it is shown, on the one hand, that the proportion of non-compliant batches in industrial conditions is significant for normal utilization of current equipments, and on the other hand, that the mixing method can alter or, at contrary, improve the concrete flow abilities.

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