Hydraulic binder composition comprising blast furnace slag
AssigneeChryso
InventorsPascal BOUSTINGORRY, Marie DAVID, Laurent BONAFOUS
Life of this patent
Estimating the term…
Abstract
The present invention relates to a hydraulic binder composition comprising: a hydraulic binder that comprises at least one alumino-silicate compound, preferably blast furnace slag, and an alkaline or sulphate activator, and a maximum of 10% by weight of clinker, preferably from 0 to 10% by weight of clinker; nitric acid or a salt thereof, other than zinc nitrate.
Claims20
Hydraulic binder composition comprising:
- a hydraulic binder that comprises at least one alumino-silicate compound, and an alkaline or sulphate activator and a maximum of 10% by weight of clinker;
- nitric acid or a salt thereof, the salt of nitric acid being other than zinc nitrate, the amount of nitric acid or a salt thereof being between 0.1 and 1.5% by dry weight, relative to the total weight of hydraulic binder.
A hydraulic composition (HC) comprising:
- a hydraulic binder that comprises at least one alumino-silicate compound, and an alkaline or sulphate activator, and a maximum of 10% by weight of clinker, and optionally mineral additives;
- water;
- optionally at least one aggregate;
- nitric acid or a salt thereof, the salt of nitric acid being other than zinc nitrate, the amount of nitric acid or a salt thereof being between 0.1 and 1.5% by dry weight, relative to the total weight of hydraulic binder.
(canceled)
A process for enhancing the retention of fluidity over time of a hydraulic composition comprising a hydraulic binder that comprises at least one alumino-silicate compound, and an alkaline or sulphate activator, and a maximum of 10% by weight of clinker, water, and optionally at least one aggregate;
- comprising the adding to the said hydraulic composition of nitric acid or a salt thereof, other than zinc nitrate, the amount of nitric acid or a salt thereof being between 0.1 and 1.5% by dry weight, relative to the total weight of hydraulic binder.
Dependencies are inferred from the claim text.