Flow Induced segregation in full scale castings with SCC

Lars Nyholm Thrane, Henrik Stang, Mette Rica Geiker

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Abstract

Though promising, pioneering work has been carried out with rheological characterization and numerical modelling of form filling with SCC, the approach is far from standard in the concrete industry and clearly the approach does not yet hold all the answers to relevant questions. In particular flow induced segregation is a major risk during casting and it is not yet clear how this phenomenon should be modelled. In this paper testing and numerical simulations of full-scale wall castings are compared. Two different SCCs and three different filling methods were applied resulting in different flow patterns during form filling. Results show that the flow patterns have a major influence on the risk of flow induced segregation and the surface finish of the hardened concrete. A hypothesis for the mechanism of flow induced segregation is put forth.
Original languageEnglish
Title of host publicationSelf-Compacting Concrete SCC 2007 : Proceedings of the Fifth International RILEM Symposium
Number of pages1055
Volume1
Place of PublicationFrance
PublisherRILEM Publication S.A.R.L.
Publication date2007
Edition1
Pages449-454
ISBN (Print)978-2-35158-050-9
Publication statusPublished - 2007
Event5th International Symposium on Self-Compacting Concrete - Ghent, Belgium
Duration: 3 Sep 20075 Sep 2007
Conference number: 5
http://www.rilem.net/gene/main.php?base=500218&id_publication=59

Conference

Conference5th International Symposium on Self-Compacting Concrete
Number5
CountryBelgium
CityGhent
Period03/09/200705/09/2007
Internet address

Cite this

Thrane, L. N., Stang, H., & Geiker, M. R. (2007). Flow Induced segregation in full scale castings with SCC. In Self-Compacting Concrete SCC 2007: Proceedings of the Fifth International RILEM Symposium (1 ed., Vol. 1, pp. 449-454). France: RILEM Publication S.A.R.L..