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US 9,776,919 B2Granted
Rapid hydraulic binder comprising a calcium salt
AssigneeLafarge
InventorsSerge Sabio, Serge Ghilardi, Xiaolin Pardal, Michel Testud
Life of this patent
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Abstract
A hydraulic binder includes a Portland clinker having a Blaine specific surface of 4000 to 5500 cm2/g, from 2.5 to 8% of sulphate expressed by mass of SO3 relative to the mass of clinker, from 1.5 to 10% of calcium nitrite and/or calcium nitrate expressed as anhydrous mass relative to the mass of clinker and from 15 to 50% of a mineral addition including calcium carbonate by mass relative to the total mass of binder.
Claims12
A hydraulic composition comprising
- a hydraulic binder comprising a Portland cement clinker having a Blaine specific surface area of 4000 to 5500 cm2/g, from 2.5 to 8% of sulphate expressed by mass of SO3 relative to the mass of clinker, from 1.5 to 10% of calcium nitrite and/or calcium nitrate expressed as anhydrous mass relative to the mass of clinker and from 15 to 50% of a mineral addition comprising calcium carbonate by mass relative to the total mass of binder, and
- water,
- wherein the quantity of clinker is from 220 to 450 kg/m3.
Dependencies are inferred from the claim text.