31. The influence of ultrafine GCC on the properties of self compacting concrete

Title: 31. The influence of ultrafine GCC on the properties of self compacting concrete
Author(s): P. Gonnon, H.W. Roeth
Paper category : conference
Book title: 5th International RILEM Symposium on Self-Compacting Concrete
Editor(s): G. De Schutter and V. Boel
Print-ISBN: 978-2-35158-047-9
e-ISBN: 978-2-35158-088-2
Publisher: RILEM Publications SARL
Publication year: 2007
Pages: 217 - 222
Total Pages: 6
Language: English

Abstract: The properties and advantages of Self Compacting Concretes are well-known in the meantime: extra-ordinary flowability, perfect filling of the mould even in the presence of dense reinforcement, improved workability etc. Compared to normal standard concretes these SCC´s are showing a significantly increased content of fine and ultra-fine materials.
Originally the fines had the only task to stabilize the very liquide concrete and to avoid any kind of segregation. Currently other parameters are coming to the fore as durability and robustness for instance, which have their roots in an optimized low water-cement resp. waterbinder-ratio. In this regard OMYA have done an essential step and developed BETOFLOW®, which is an ultrafine Calciumcarbonate addition on a slurry basis. Betoflow OM65% combines the classical filler effect with the fluidizing properties of a lubricant. Both together allow to produce a SCC with outstanding properties as a clear gain in density, strength and mechanical resistance.
This paper will show how Betoflow OM65% as an industrial ultrafine mineral concept can enable SCC to overcome technical barriers as water demand, architecural improvements, stability performance as well as pozzolanic effects.

Online publication: 2009-06-16
Publication type : full_text
Public price (Euros): 0.00