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US 9,376,342 B2Granted
Antifreeze composition for producing a durable concrete in cold temperature conditions
AssigneeYara International Asa
InventorWolfram Franke
Life of this patent
Estimating the term…
Abstract
The present invention relates to an admixture for a cementitious composition and a method using said admixture for manufacturing a durable cementitious composition, in particular a concrete, in cold weather conditions, such as in winter time or in cold geographical areas.
Claims15
Admixture for a cementitious composition, comprising:
- a) calcium nitrate,
- b) aluminium nitrate,
- c) a superplasticizer (SP), and
- d) optionally, an air entraining agent (AEA),
- wherein the admixture comprises:
- 62 to 82 weight %, relative to the total weight of the admixture, of calcium nitrate,
- 10 to 36 weight %, relative to the total weight of the admixture, of aluminium nitrate,
- 5 to 15 weight %, relative to the total weight of the admixture, of a superplasticizer (SP), and
- 0 to 1 weight %, relative to the total weight of the admixture, of an air entraining agent (AEA).
6 more elements
Cementitious composition comprising:
- i) cement,
- ii) water,
- iii) an admixture for the cementitious composition comprising:
- a) 2.5 to 3.5 weight %, relative to the weight of the cement, of calcium nitrate,
- b) 0.5 to 1.0 weight %, relative to the weight of the cement, of aluminium nitrate,
- c) 0.25 to 0.5 weight %, relative to the weight of the cement, of a superplasticizer (SP), and
- d) 0 to 0.04 weight %, relative to the weight of the cement, of an air entraining agent (AEA), and
- iv) optionally an aggregate.
5 more elements
Dependencies are inferred from the claim text.