Incorporation des sables concassés à différents taux de fillers dans la composition des bétons à très hautes performances : Comportement mécanique et Durabilité

Abstract

Chiheb, D., Belaoura, M., Oudjit, M.N. and Bali, A. 2016. Incorporation of crushed sand at different rates of fillers in the composition of concretes with very high performances: mechanical behavior and durability. Lebanese Science Journal, 17 (2): 146-165. This study focuses on the characterization of concretes Very High Performance comparing crushed sand to high levels of fine limestone available in large quantities in Algeria as an alternative resource to rolled sand. The parameters studied were the sand substitution rate to roll crushed sands, and the dosage of silica fume, cement and superplasticizer. Several tests were performed such as mechanical strength, shrinkage and a sustainability study to identify the mechanisms that govern the behavior of these new concretes. The results showed that the crushed sand is a very promising material; it opens up great horizons to optimize VHPC in Algeria, since it provides good compactness, better mechanical performance, very good different behavior and excellent sustainability indicators when combined with rolled sand.

Keywords

• VHPC
• limestone fillers
• mechanical strength
• chloride anion
• shrinkage