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The methodology for assessing the impact of new generation superplasticizers on air content in self-compacting concrete

Authors
Journal
Construction and Building Materials
0950-0618
Publisher
Elsevier
Publication Date
Volume
53
Identifiers
DOI: 10.1016/j.conbuildmat.2013.11.092
Keywords
  • Self-Compacting Concrete (Scc)
  • Superplasticizer
  • Air Bubble
  • Foam Ability Index
  • Foam Stability Index
  • Surface Tension

Abstract

Abstract Certain types of the new generation superplasticizers (SP) cause the rise of excessive air content in self-compacting concrete (SCC). The influence of different type of SP on air-content in cement paste and fresh SCC are tested in the paper. The qualitative methods (foam ability and stability index), which serves the best choice of SP not showing the side-effect in the form of an excessive SCC air-entrainment are presented. The surface tension of SP solutions is also analyzed. The results of tests show that we can predict the influence of SP on air-content of SCC by measuring the surface tension of SP solution, foam ability and stability index of cement paste.

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