Micro-Proportioning of SCC with Crushed aggregate: Rheology of Filler Modified Cement Pastes

Author(s): Rolands Cepuritis, Stefan Jacobsen, Sverre Smeplass, Ernst Mørtsell, Børge J. Wigum
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: 3-13
Total Pages: 11
Language: English

Abstract: In concrete micro-proportioning the particle size distribution (PSD) of the crushed aggregate fines is optimized. The effect on rheology of filler modified cement paste for vertical shaft impact (VSI) crushed and air classified sand fines (≤ 0.250 mm) from 10 very different Norwegian bedrocks has been investigated. One important finding of the rheology studies presented is that the total surface area of the crushed rock materials correlates to rheological properties of the filler modified cement paste. It is also showed that the mineralogy affects rheology mainly (only) in the finest particles (< approx. 20 microns). Finally we discuss how the micro-proportioning approach can be applied for all fines, and also for control of fresh concrete rheological properties in full-scale production of SCC.

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