Influence of the Rheological Properties of SCC on the Formwork Pressure

Michał P. Drewniok, Grzegorz Cygan, Jacek Gołaszewski

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

Formworks for self-compacting concrete (SCC) are commonly designed under the assumption of full hydrostatic pressure. However, current research shows that SCC's design pressure could be reduced, if the concrete's rheological properties were taken, into account. Knowing the relationship between the properties and the pressure, we can prevent formwork overdesign. This research was based, on the assumption that fresh concrete can be described as a Bingham fluid. This paper presents the correlations between static and dynamic yield stress, and lateral formwork pressure. Measured rheological parameters were compared to standard technical concrete tests. Formwork pressure were determined on the element imitating a column with dimensions of 0.20 x 0.20 m and a height of 1.20 m with two casting speeds 1 and 7 m/h. Three types of cement, 2 superplasticizers, and 2 w/c ratios were used. A correlation between rheological parameters and pressure reduction over time was observed. Based on our results we propose a methodology and testing sequence applicable in practice.

Original languageEnglish
Pages (from-to)124-129
Number of pages6
JournalProcedia Engineering
Volume192
Early online date22 Jun 2017
DOIs
Publication statusPublished - 31 Dec 2017
Event12th International Scientific Conference Of Young Scientists On Sustainable, Modern and Safe Transport, TRANSCOM 2017 - , Slovakia
Duration: 31 May 20172 Jun 2017

Keywords

  • formwork pressure
  • fresh concrete
  • rheological properties
  • SCC

ASJC Scopus subject areas

  • Engineering(all)

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