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

16 Citations (Scopus)

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 Sep 2016
DOIs
Publication statusPublished - 15 Oct 2016

Keywords

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

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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