Advertisement

Smart Polycarboxylate Design for SCC in Precast Applications

  • Lukas Frunz
  • Didier Lootens
  • Robert J. Flatt
  • Franz Wombacher
  • Ulf Velten
Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 1)

Abstract

Concretes for self-compacting concrete (SCC) applications have to combine a high fluidity and fluidity retention with high segregation resistance. This optimal rheological behaviour is obtained by combining a suitable aggregate grading curve with correct rheological properties of the suspending matrix (i.e. the cement paste). It is shown in this paper how these rheological properties can be influenced by polycarboxylate-based superplasticizers. Furthermore it is shown that relatively easy tests can be used to access the rheological properties of both the fresh cement paste and the concrete quantitatively. It is demonstrated that a new superplasticizer leads to an improved robustness in the formulation of SCC.

Keywords

Shear Rate Rheological Property Fresh Concrete Limestone Powder Slump Flow 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Flatt, R.J. (2001), In: Polymers in Particulate Systems: Properties and Applications, Hackley, V.A., Somasundran, P. and Lewis, J.A. (Eds.), Surfactant Science Series, Marcel Dekker Inc, pp. 247–294.Google Scholar
  2. 2.
    Banfill, P.F.G. (Ed.) (1991), In: The rheology of fresh cement and concrete, Spon, 373p.Google Scholar
  3. 3.
    Roussel, N. (2006), Mater. Struct., vol. 39, n. 4, pp. 501–509.Google Scholar
  4. 4.
    Roussel, N. et al. (2005), Cem. Conc. Res., vol. 35, pp. 817–822.CrossRefGoogle Scholar
  5. 5.
    Winnefeld, F. et al. (2007), Cem. Conc. Compos., vol. 29, pp. 251–262.CrossRefGoogle Scholar
  6. 6.
    Yamada, K. et al. (2000), Cem. Conc. Res., vol. 30, pp. 197–207.CrossRefGoogle Scholar
  7. 7.
    Zimmermann, J. et al. (2009), In: Superplasticizers and other chemical admixtures in concrete, Proc. 9th ACI Int. Conf. (Seville), Holland, T.C., Gupta, P.R., Malhotra, V.M. (Eds.), ACI, pp. 165–175.Google Scholar
  8. 8.
  9. 9.
    Roussel, N. et al. (2005), Cem. Conc. Res., vol. 35, pp. 823–830.CrossRefGoogle Scholar
  10. 10.
    [10] Jossic, L. and Magnin, A. (2001), Les cahiers de Rhéologie, n. 1, pp. 55–64 (in French).Google Scholar
  11. 11.
    Atapattu, D.D. et al. (1995), J. Non-Newton. Fluid Mechan., vol. 59, n. 2–3, pp. 245–265.Google Scholar
  12. 12.
    Beris, A.N. et al. (1985), J. Fluid. Mechan., vol. 158, pp. 219–244.zbMATHMathSciNetGoogle Scholar
  13. 13.
    Roussel, N. (2006), Mater. Stuct., vol. 39, n. 1, pp. 75–83.MathSciNetGoogle Scholar
  14. 14.
    Chopin, D. (2003), Mixing of High-Performance and Self-Compacting Concretes – Optimisation of the mixing time, Ph.D. Thesis, Laboratoire Central des Ponts et Chaussées, France (in French).Google Scholar

Copyright information

© RILEM 2010

Authors and Affiliations

  • Lukas Frunz
    • 1
  • Didier Lootens
    • 1
  • Robert J. Flatt
    • 1
  • Franz Wombacher
    • 1
  • Ulf Velten
    • 1
  1. 1.Sika Technology AGZürichSwitzerland

Personalised recommendations