Mortar as a model to predict self-compacting concrete rheological properties as a function of time and temperature

Jacek Gołaszewski, Aleksandra Kostrzanowska-Siedlarz, Grzegorz Cygan, Michał Drewniok

Research output: Contribution to journalArticlepeer-review

31 Citations (SciVal)

Abstract

The design of self-compacting concrete (SCC) is a time consuming and expansive process. We propose a new method for designing SCCs from equivalent mortars. For the purpose of this research, we investigated four methodologies to design equivalent mortars. They are all based on the assumption that the fresh materials, mortar and concrete can both be described as Bingham fluids. Thus, the measure of the rheological parameters of the mortars can be directly related to the equivalent parameters in concrete. Good models exhibit the same sensitivity as concrete to temperature, choice of superplasticizer and w/c changes as concrete. We propose two methods which conserve the w/c of concrete by calculating the appropriate paste-to-aggregate ratio. The results were validated experimentally for 3 temperatures, 2 superplasticizers, 2 cement types and 2 w/c ratios.

Original languageEnglish
Pages (from-to)1100-1108
Number of pages9
JournalConstruction and Building Materials
Volume124
Early online date3 Sept 2016
DOIs
Publication statusPublished - 15 Oct 2016

Bibliographical note

Funding Information:
This paper was elaborated with the financial support of the Project No. 842/B/T02/2011/40 “The influence of time and technological factors on rheological properties of self-compacting concrete in terms of the pressure on the formwork” financed by the from the National Science Centre Poland project “Innovative cementitious materials and concretes made with high – calcium fly ashes” co-financed by the EU from the European Regional Development Fund and the project “DoktoRIS – Scholarship program for innovative Silesia” co-financed by the European Union under the European Social Fund and. This work was developed while Michal Drewniok was in Silesian University of Technology, Faculty of Civil Engineering, Poland.

Publisher Copyright:
© 2016 Elsevier Ltd

Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

Keywords

  • Fresh concrete
  • Mortar
  • Rheological properties
  • SCC
  • Self-compacting concrete

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science

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