Abstract
This paper presents the results obtained from two different vertical form filling experiments
with SCC that have been completed as part of the experimental work in
an ongoing Ph.D project. The project is carried out at the Danish Technological Institute
in collaboration with the Technical University of Denmark and the second
largest ready-mix manufacturer in Denmark, 4K-Beton A/S. The aim is to identify
the flow characteristic of SCC and the effect of concrete properties, casting technique,
reinforcement configuration, and form geometry. A wall form of dimensions
l = 3m, w = 0.3m, h =1m has been produced. To improve identification of the flow
(i.e. dead zones, plug flow, laminar flow, turbulent flow, blocking etc.) the form has
one transparent acrylic plate and it has shown valuable to change between normal
greyish concrete, and a pigmented (red) concrete during the filling process. Monitoring
equipment has been produced and tested and is valuable as documentary evidence
of the flow in combination with visual observations. In one experiment reinforcement
gap sizes of 1.5 and 3⋅Dmax,agg have been applied and blocking occurred
at 1.5⋅Dmax,agg. Pumping from the bottom corner at casting rate of 10 m/h resulted in
hydrostatic pressure. Continuously shearing across the surface seems to have a
positive effect on the surface quality (no blowholes).
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the Nordic Mini Seminar on Form Filling Ability of SCC |
| Publication date | 2004 |
| Publication status | Published - 2004 |
| Event | Nordic Mini Seminar on Form Filling Ability of Self-Compacting Concrete - Taastrup, Denmark Duration: 3 Nov 2004 → 4 Nov 2004 |
Conference
| Conference | Nordic Mini Seminar on Form Filling Ability of Self-Compacting Concrete |
|---|---|
| Country/Territory | Denmark |
| City | Taastrup |
| Period | 03/11/2004 → 04/11/2004 |
Keywords
- Form filling, Casting, Flow Characteristics, Form pressure,