78. Evaluation of gravitational flow tests with SCC in pipes as a forecast for pumping pressures
Title: 78. Evaluation of gravitational flow tests with SCC in pipes as a forecast for pumping pressures
Author(s): D. Feys, B. Calie, R. Verhoeven, G. De Schutter
Paper category : conference
Book title: 5th International RILEM Symposium on Self-Compacting Concrete
Editor(s): G. De Schutter and V. Boel
Publisher: RILEM Publications SARL
Publication year: 2007
Pages: 515 - 520
Total Pages: 6
Nb references: 8
Abstract: In construction, a large amount of SCC is pumped daily into a formwork without any fundamental knowledge of the flow characteristics. As a result, the pumping system is mostly not operated under optimal circumstances. At Ghent University, pumping tests are planned in order to evaluate hydraulics laws and rheological parameters during pipe flow. In order to prepare these tests, a gravitational flow test-setup has been developed for SCC.
The results of these tests, described in this paper, indicate a good agreement between rheological tests and the flow resistance of SCC in pipes, and show the validity of Poiseuille’s law for laminar flow. The test results with the shortest pipe (3m) indicate that in this case second order effects, like entrance and exit effects have a substantial effect on the flow.
Online publication: 2009-06-16
Publication type : full_text
Public price (Euros): 0.00