Back to results
US 9,434,647 B2Granted
Aqueous suspensions including an aluminous cement and binding compositions
AssigneeKerneos
InventorsPascal Taquet, Pierre-Antoine Andreani, Veronique Watt, Emilie Reveyrand
Life of this patent
Estimating the term…
Abstract
Stabilized aqueous suspensions include aluminous cement and/or calcium sulfoaluminous cement and binding compositions including the aqueous suspension in combination with organic binders, which are stable at room temperature and at high temperature as well as methods for preparing the same are described.
Claims27
A stabilized aqueous suspension, comprising:
- from 50% to 70% by weight, relative to the total weight of said aqueous suspension at least one hydraulic binder comprising aluminous cement and/or calcium sulfoaluminous cement and at least one blocking agent comprising a phosphorus-containing compound selected from the group consisting of metaphosphoric acid, phosphorous acid, phosphoric acid, phosphonic acids and any compound which may form any of these compounds by reacting with water, said suspension comprising from 0.1% to 20% by weight of phosphorus-containing compound relative to the aluminous cement and/or calcium sulfoaluminous cement total weight,
- from 30% to 50%, by weight, relative to the total weight of said aqueous suspension of water, and
- from 0 to 5%, by weight, relative to the total weight of said aqueous suspension of additional additives,
- wherein said stabilized aqueous suspension is stabilized for at least two months at a temperature from about 15° C. to 55° C.
1 more element
A method for retarding for at least two months at a temperature ranging from about 15° C. to 55° C. the setting of a stabilized aqueous suspension comprising:
- from 50% to 70%, by weight, relative to the total weight of said aqueous suspension of at least one hydraulic binder, the hydraulic binder comprising at least one aluminous cement,
- from 30% to 50%, by weight, relative the total weight of said aqueous suspension of water, and
- from 0 to 5%, by weight, relative to the total weight of said aqueous suspension of additional additives,
- said method comprising:
- adding to said aqueous suspension, at least one phosphorus-containing compound selected from the group consisting of metaphosphoric acid, phosphorous acid, phosphoric acid, phosphonic acids and any compound which may form any of metaphosphoric acid, phosphorous acid, phosphoric acid, and phosphonic acids by reacting with water, said phosphorus-containing compound representing from 0.1 to 20% by weight relative to the aluminous cement total weight.
2 more elements
Dependencies are inferred from the claim text.