High- or ultra-high performance concrete

Details High- or ultra-high performance concrete High- or ultra-high performance concrete

C - Chemistry, Metallurgy

04

B

C04B 7/52 (2006.01) C04B 28/02 (2006.01) C04B 40/00 (2006.01)

Patent

CA 2754293

The invention relates to a bonding pre-mixture containing: 0.2% to 63% of a material of an ultrafine granulometric class that contains individual D90 particles of less than 1 µm and/or of a specific BET surface area greater than 5 m2/g; 8% to 63% of selected Portland cement that contains D90 particles of less than 30 µm; and 25% to 85% of a material, other than the cement, of a fine granulometric class that contains particles, the D10 and D90 of which are 1 µm to 120 µm and of a specific BET surface area greater than 5 m2/g. The invention also relates in particular to a bonding mixture that contains particles, the D10 and D90 of which are 120 µm to 5 mm, in addition to the pre-mixture of a material of a medium granulometric class.

L'invention a pour objet un pré-mélange liant comprenant de 0,2 % à 63 % d'un matériau d'une classe granulométrique ultrafine, comprenant des particules individuelles de D90 inférieur à 1 µm et/ou de surface spécifique BET supérieure à 5 m2/g; de 8 % à 63 % de ciment Portland sélectionné comprenant des particules de D90 inférieur à 30 µm et de 25 à 85 % d'un matériau, différent du ciment, d'une classe granulométrique fine, comprenant des particules dont le D1O et le D90 sont compris de 1 µm à 120 µm et de surface spécifique BET inférieure à 5 m2/g. L'invention concerne aussi notamment un mélange liant comprenant, en plus du prémélange d'un matériau d'une classe granulométrique moyenne, comprenant des particules dont le D1O et le D90 sont compris de 120 µm à 5 mm.

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