Velocity profile of self compacting concrete and traditional concrete flowing in a half open pipe

H. D. Le, G. De Schutter, E. H. Kadri, S. Aggoun, J. Vierendeels, Peter A Troch

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations

Abstract

The behavior of concrete flowing in a pipe is a key factor for mastering the concrete pumping technique. Due to the non-homogeneity of concrete, the concentration of particles (aggregate, sand, cement⋯) is not the same everywhere in the pipe. Particularly in the highly sheared zone near the wall, the concentration of coarse particles is much lower than that in the bulk. As a result, the rheological properties across the cross section vary with the distance from the wall. This phenomenon affects directly the velocity profile across the section. However, the velocity profile of concrete flowing in a pipe has never been quantitatively measured. This paper shows an experimental method to accurately measure the velocity profile. On the other hand, the influence of the variation of the rheological properties on the velocity profile across the pipe is also studied. Finally, a comparison between experimental analyses and numerical simulations shows reasonable correlation. This paper concentrates on the difference between the flow of a self-compacting concrete and that of a traditional concrete based on their different rheological properties.

Original languageEnglish (US)
Title of host publicationConcrete Repair, Rehabilitation and Retrofitting III - Proceedings of the 3rd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2012
Pages1382-1387
Number of pages6
Publication statusPublished - 2012
Externally publishedYes
Event3rd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2012 - Cape Town, South Africa
Duration: Sep 3 2012Sep 5 2012

Other

Other3rd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2012
CountrySouth Africa
CityCape Town
Period9/3/129/5/12

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ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Le, H. D., De Schutter, G., Kadri, E. H., Aggoun, S., Vierendeels, J., & Troch, P. A. (2012). Velocity profile of self compacting concrete and traditional concrete flowing in a half open pipe. In Concrete Repair, Rehabilitation and Retrofitting III - Proceedings of the 3rd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2012 (pp. 1382-1387)