Numerical simulation of formwork pressure while pumping self-compacting concrete bottom-up

Serge Tichko, Jens Van De Maele, Niels Vanmassenhove, Geert De Schutter, Jan Vierendeels, Ronny Verhoeven, Peter Troch

Research output: Contribution to journalReview article

10 Scopus citations

Abstract

Self-compacting concrete (SCC) enables new casting techniques, filling formworks by pumping bottom-up. However, fundamental questions remain concerning the formwork pressure when following this advanced filling procedure. In order to determine the maximum formwork pressures, a series of formwork filling tests, with SCC being pumped from the base of the formwork, have been performed at the Magnel Laboratory for Concrete Research of the Ghent University. Numerical simulations of these formwork filling tests have also been performed for comparison with the experiments. During the filling process, the formwork pressures were measured close to the base of the formworks, where the maximum pressures were expected to occur. The measured formwork pressures were finally compared with the computed formwork pressures. Both the experiments and the simulations in this study revealed that the formwork pressures during the filling tests were slightly higher than hydrostatic for SCC pumped from the base of the formworks. This was due to the additional occurring hydraulic losses.

Original languageEnglish (US)
Pages (from-to)218-233
Number of pages16
JournalEngineering Structures
Volume70
DOIs
StatePublished - Jul 1 2014
Externally publishedYes

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Keywords

  • Base filling
  • CFD
  • Formwork pressure
  • Numerical modelling
  • Self-compacting concrete

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Tichko, S., Van De Maele, J., Vanmassenhove, N., De Schutter, G., Vierendeels, J., Verhoeven, R., & Troch, P. (2014). Numerical simulation of formwork pressure while pumping self-compacting concrete bottom-up. Engineering Structures, 70, 218-233. https://doi.org/10.1016/j.engstruct.2014.04.008