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Compatibility between Base Concrete Made with Different Chemical Admixtures and Surface Hardener

  • M. T. Pinheiro-Alves
  • A. R. Sequeira
  • M. J. Marques
  • A. Bettencourt Ribeiro
Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 4)

Abstract

Many cases of cracking and detachment of the concrete surface have appeared in concrete pavements where surface hardeners were used in Portugal. The main causes for cracking and delamination of trowelled concrete pavements are several and it is essential to control bleeding and the time available to perform the finishing operations. Several base concretes were made with different chemical admixtures and one type of surface hardeners. The purpose of this study was evaluating the influence of the “open time” for each chemical admixture. Results show that the type of chemical admixture has a great importance in the control of the “open time” and consequently avoiding cracking and detachment.

Keywords

Surface Hardener Coarse Aggregate Concrete Surface Chemical Admixture Water Reducer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    The Concrete Society, Delamination of Concrete Floor Surfaces, Concrete Advice No. 18, The Concrete Society Bookshop (2003)Google Scholar
  2. 2.
    Topçu, I.B., Elgun, V.B.: Cement and Concrete Research 34, 275–281 (2003)CrossRefGoogle Scholar

Copyright information

© RILEM 2012 2012

Authors and Affiliations

  • M. T. Pinheiro-Alves
    • 1
    • 2
  • A. R. Sequeira
    • 1
  • M. J. Marques
    • 1
  • A. Bettencourt Ribeiro
    • 3
  1. 1.School of Sciences and TechnologyUniversity of ÉvoraÉvoraPortugal
  2. 2.Group of Sustainable ConstructionCentre of Territory, Environment and Construction (C-TAC)ReguaPortugal
  3. 3.Nacional Laboratory of Civil Engineering (LNEC)LisbonPortugal

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