Concrete with a low cement content

Details Concrete with a low cement content Concrete with a low cement content

2007-05-16

2011-10-25

Marcantoni, Paul (Department: 1731)

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

C106S705000, C106S737000, C106S738000, C106SDIG002, C264S333000, C264SDIG043

Reexamination Certificate

active

08043425

ABSTRACT:
A subject of the invention is a mixture comprising in proportions by mass:from 0.4 to 4%, preferably from 0.8 to 1.7%, of materials in the ultrafine particle size range, constituted by particles with a D90 smaller than 1 μm and/or with a specific BET surface area greater than 6 m2/g;from 1 to 6%, preferably from 2 to 5%, of Portland cement;from 8 to 25%, preferably from 12 to 21%, of materials in the fine particle size range, constituted by particles the D10 and the D90 of which are comprised between 1 μm and 100 μm and with a specific BET surface area of less than 5 m2/g, different from the cement;from 25 to 50%, preferably from 30 to 42%, of materials in the medium particle size range, constituted by particles the D10 and the D90 of which are comprised between 100 μm and 5 mm; andfrom 25 to 55%, preferably from 35 to 47%, of materials in the larger particle size range, constituted by particles the D10 of which is greater than 5 mm.The invention also relates in particular to premixes, concrete compositions and associated objects made of hardened concrete, as well as their preparation methods.

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French Search Report for French Application No. 0604398, dated Jan. 5, 2007.

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