C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 28/04 (2006.01)
Patent
CA 2675945
The invention provides a ultra high performance concrete (UHPC) which comprises in parts by weight: 100 of Portland cement; 50 to 200 of a sand having a single grading with a D10 to D90 between 0.063 and 5 mm, or a mixture of sands (preferably two sands), the finest sand having a D10 to D90 between 0.063 and 1 mm and the coarsest sand having a D10 to D90 between 1 and 4mm 10 to 50 of a particulate substantially non-pozzolanic material having a mean particle size less than 15 &mgr;m; 0.1 to 10 of a water-reducing superplasticizer; and 10 to 30 of water; which concrete is substantially free of silica fume; the said concrete having a compressive strength greater than 100 Mpa at 28 days.
L'invention concerne un béton qui comprend, en parties en poids, 100 de ciment de Portland, 50 à 200 de sable possédant une granulométrie unique avec un D10 à D90 entre 0,063 et 5 mm, ou un mélange de sables (de préférence, deux sables), le sable le plus fin avec un D10 à D90 entre 0,063 et 5 mm et le sable le plus grossier avec un D10 à D90 entre 1 et 4 mm; 10 à 50 d'un matériau particulaire sensiblement non pouzzolanique possédant une taille moyenne de particules inférieur à 15 µm; 0,1 à 10 d'un super-plastifiant réducteur d'eau; et de 10 à 30 d'eau, ledit béton étant sensiblement exempt de fumées de silice et possédant une résistance à la compression supérieure à 100 Mpa sur 28 jours.
Batoz Jean-Francois
Behloul Mouloud
Fonollosa Philippe
Lafarge
Norton Rose Canada S.e.n.c.r.l.,s.r.l./llp
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