Advertisement

Prediction of SCC Formwork Pressure in Full-Scale Elements

  • Kamal H. Khayat
  • Ahmed F. Omran
  • Matthew D’Ambrosia
Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 1)

Abstract

Various prediction models, based on experimental results to evaluate formwork pressure exerted by self-consolidating concrete were established based on extensive laboratory evaluation. The models are based on the measurements of the structural build-up of the concrete with rest time and placement characteristics of the concrete. The latter includes the rate of rise of the concrete in the formwork, concrete temperature, and minimum dimension of the formwork. This paper presents the results of two campaigns of field validation carried out at Sherbrooke, Quebec, and Skokie, Illinois, to validate the prediction models. The results confirm that the established models offer adequate prediction of form pressure exerted by self-consolidating concrete.

Keywords

Lateral Pressure American Concrete Institute Casting Rate Slump Flow Column Element 
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.
    Khayat, K.H. and Omran, A.F. (2007), State-of-the-art review of form pressure Exerted by self-consolidating concrete, National Ready-Mix Concrete Research & Education Foundation and the Strategic Development Council of the American Concrete Institute (ACI), 200 pp. http://www.rmc-foundation.org Google Scholar
  2. 2.
    Khayat, K.H., Omran, A.F., Neji, S., Billberg, P. and Yahia, A. (2008), Test methods to evaluate form pressure of SCC, Proceedings of the International Conference of ACBM on SCC (SCC 2008), Chicago, USA, 7 pp.Google Scholar
  3. 3.
    Khayat, K.H. and Omran A.F. (2009), Evaluation of SCC formwork pressure, Second International Symposium on Design, Performance and use of Self-Consolidating Concrete, Beijing, China, pp. 43–55.Google Scholar
  4. 4.
    Khayat, K.H. and Omran A.F. (2009), Evaluation of SCC formwork pressure, Concrete Infocus Magazine, Publication National Ready-Mixed Concrete Association – Self-Consolidating Concrete: Developing Guidelines to Lower Lateral Pressure, pp. 16–19.Google Scholar
  5. 5.
    Vanhove, Y., Djelal, C. and Magnin, A. (2004), Magazine of Concrete Research, vol. 56, n. 1, pp. 55–62.Google Scholar
  6. 6.
    Roussel, N. and Ovarlez, G. (2005), A physical model for the prediction of pressure profiles in a formwork, Proceedings of the 2nd North American conference on the Design and Use of Self-Consolidating Concrete (SCC 2005) and the 4th International RILEM Symposium on Self-Compacting Concrete, Eds. Shah, S. P., Chicago, pp. 647–654.Google Scholar
  7. 7.
    Graubner, C.-A. and Proske, T. (2005), Formwork pressure: A new concept for the calculation, Proceedings of the 2nd North American conference on the Design and Use of Self-Consolidating Concrete (SCC 2005) and the 4th International RILEM Symposium on Self-Compacting Concrete, Eds. Shah, S. P., Chicago, pp. 605–613.Google Scholar
  8. 8.
    Khayat, K. H. and Assaad, J. (2005), Use of rheological properties of SCC to predict formwork pressure, Proceedings of the 2nd North American Conference on the Design and Use of Self-Consolidating Concrete (SCC 2005), and the 4th International RILEM Symposium on Self-Compacting Concrete, Chicago, Eds. Shah, S. P., pp. 671–677.Google Scholar
  9. 9.
    Assaad, J. and Khayat, K.H. (2006), ACI Materials Journal, vol. 103, n. 4, pp. 280–287.Google Scholar
  10. 10.
    NRMCA-SDC Final Report, (2009), SCC formwork pressure, submitted to the National Ready-Mix Concrete Research & Education Foundation and the Strategic Development Council of the American Concrete Institute, 549 pp.Google Scholar
  11. 11.
    Assaad, J. (2004), Formwork pressure of self-consolidating concrete – Influence of thixotropy, Ph.D. Thesis, Department of Civil Engineering, Université de Sherbrooke, 453 pp.Google Scholar

Copyright information

© RILEM 2010

Authors and Affiliations

  • Kamal H. Khayat
    • 1
  • Ahmed F. Omran
    • 1
  • Matthew D’Ambrosia
    • 2
  1. 1.Université de SherbrookeQuébecCanada
  2. 2.CTLGroupSkokieUSA

Personalised recommendations