Influence of segregation on the performance of self-compacting concrete in the fresh and hardened states

  • Moulaï Abdellah Bouabdallah Department of Civil Engineering, National Polytechnic School of Oran, Algeria
  • Rachida Mohammed Krachaï L.S.T.E Laboratory; Department of Civil Engineering, Mustapha Stambouli University of Mascara, Algeria.
Keywords: Self-compacting concrete, Segregation index, Granular mixture, Fresh state test, hardened state test

Abstract

The granular mixture represents one of most important parameters in the formulation of self-compacting concretes in order to achieve a representative granular distribution. A good resistance to segregation results in a regular distribution of the different sizes of the aggregates in all parts of the element, with the same granule density. The granular mixture must be homogeneous and representative, and has to be able to flow in the absence of dynamic and static segregation.
The main objective of the present research is to study the influence of segregation on the performance of Self-compacting concrete in the fresh and hardened state, by determining the static segregation index according to the percentage of aggregates of class G 8/15 and that of aggregates of class G 3/8 in order to obtain a homogeneous granular mixture, whatever the volume of self-compacting concrete to be prepared. It is well acknowledged that the threshold of the discontinuation of granular mixing represents a new element with respect to segregation in concrete. The obtained results showed that the percentage of large aggregates has a significant influence on the segregation index and the performance of self-compacting concrete (SCC) at 28 days.

References

AFGC (2008), L'Association Française de Génie Civil, Recommandations pour l’emploi des Bétons Autoplaçants, document scientifique et technique.

ASTM C1610/C1610M-10 (2010). Test method for static segregation of self-consolidating concrete using column technique.

ASTM C1712-09 (2009). Test method for rapid assessment of static segregation resistance of self-consolidating concrete using penetration test.

Bensebti, S., Chabane, A., Aggoun, S., & Houari, H. (2015) la ségrégation verticale dans les bétons autoplaçants, Mise en place d'une procédure expérimentale, Rencontres Universitaires de Génie Civil, May, Bayonne, France.

Bui, V. K., Montgomery, D., Hinczak, I., & Turner, K. (2002). Rapid testing method for segregation resistance of self-compacting concrete. Cement and Concrete research, 32(9), 1489-1496.

Fujiwara, H. (1992). Fundamental study on the self-compacting property of high-fluidity concrete. Proc Japan Concr Inst, 14(1), 27-32.

NF EN 12350-10, (2010), Essai pour béton frais - Partie 10 : béton auto-plaçant - Essai à la boîte en L. AFNOR, P18-431-10.

NF EN 12350-11, (2010), Essai pour béton frais - Partie 11 : béton auto-plaçant - Essai de stabilité au tamis, AFNOR, P18-431-11.

NF EN 12350-8, (2019). Essais pour béton frais - Partie 8 : béton auto-plaçant - Essai d'étalement au cône. AFNOR, P18-431-8.

Otsuki N., Hisada M., Nagataki S., Kamada T., (1996) "An experimental study on fluidity of antiwashout underwater concrete", ACI Materials Journal, 93, 1,20-25.

Shen, L., Jovein, H. B., & Li, M. (2014). Measuring static stability and robustness of self-consolidating concrete using modified Segregation Probe. Construction and Building Materials, 70, 210-216..

Sidky, M., Legrand, C., & Barrioulet, M. (1981). Influence de la concentration en granulats et du temps de vibration sur la ségrégation interne dans le béton frais. Matériaux et Construction, 14(5), 367-377.

Tangtermsirikul, S., Sakamoto, J., Shindoh, T., & Matsuoka, Y. (1991). Evaluation of resistance to segregation of super workable concrete and the role of a new type of viscosity agent. Reports of the Technical Research Institution, 24, 369-376.

Trudel (1995), Mise au point d’un essai rapide de mesure de la résistance à la ségrégation du béton frais, rapport de stage, Université de Sherbrooke, Québec, Laboratoire Central des Ponts et Chaussées, 122 pages.

Umehara, H., Uehara, T., Enomoto, Y., & Oka, S. (1994). Development and usage of lightweight high performance concrete. In Proceedings of International Conference on high Performance Concrete (supplementary papers), Singapore, American Concrete Institute, Detroit, MI, USA, pp. 339-353.

Yim, H. J., Bae, Y. H., & Kim, J. H. (2020). Method for evaluating segregation in self-consolidating concrete using electrical resistivity measurements. Construction and Building Materials, 232, 117283.

Published
2020-10-09
How to Cite
Bouabdallah, M. A., & Mohammed Krachaï, R. (2020). Influence of segregation on the performance of self-compacting concrete in the fresh and hardened states. Journal of Building Materials and Structures, 7(2), 178-187. https://doi.org/10.5281/zenodo.4072328
Section
Original Articles