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US 9,469,569 B2Granted
Corrosion protected fibre-reinforced cement composition for use in cold temperature conditions
AssigneeYara International Asa
InventorWolfram Franke
Life of this patent
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Abstract
The present invention relates to an admixture for a cementitious composition, the cementitious composition comprising said admixture and a method for casting a durable cementitious solid, in particular a concrete, in cold weather conditions, such as in winter time or in cold geographical areas, more in particular for casting part of the cement tube in bore hole drilling in cold weather conditions.
Claims18
Admixture for a cementitious composition, comprising:
- a) 9 to 75 weight %, relative to the total weight of the admixture, of metallic fibres,
- b) 18 to 74 weight %, relative to the total weight of the admixture, of calcium nitrate,
- c) 3 to 24 weight %, relative to the total weight of the admixture, of aluminium nitrate,
- d) 1.6 to 12.5 weight %, relative to the total weight of the admixture, of a superplasticizer (SP), and
- e) 0 to 1 weight %, relative to the total weight of the admixture, of an air entraining agent (AEA),
- wherein the sum of components a), b), c), d) and e) adds up to 100 weight %.
3 more elements
Dependencies are inferred from the claim text.