Agents for inerting clays in hydraulic compositions
AssigneeChryso
InventorFrederic Leising
Life of this patent
Estimating the term…
Abstract
A method for inerting clays in a hydraulic composition includes one step of putting a hydraulic composition or a constituent of a hydraulic composition in contact with a compound of the following formula (I): R—COO−, (Mn+)1/n (I), A hydraulic composition including the compound of formula (I), a method for preparing the hydraulic composition, a pretreated granulate which may be obtained by mixing a granulate with the compound of formula (I), and an additive for inerting clays including a superplasticizer and the compound of formula (I) are also described.
Claims17
1-17. (canceled)
A method for inerting clays in a hydraulic composition comprising a step consisting of putting a hydraulic composition or a constituent of a hydraulic composition in contact with a compound of the following formula (I):
- R—COO−, (Mn+)1/n (I)
- wherein:
- R represents a group selected from H, an alkyl and a phenyl,
- n represents an integer comprised between 1 and 5,
- Mn+ represents a cation selected from:
- H+,
- a divalent, trivalent or tetravalent metal cation, and
- a group [HNR1R2R3]n+, wherein R1, R2, and R3 represent independently of each other, H or a linear, branched or cyclic, saturated or unsaturated hydrocarbon chain, optionally aromatic, optionally substituted with one or several substituents selected from a hydroxyl and a group NR4R5, wherein R4 and R5 represent independently H or an alkyl optionally substituted with a group NR6R7, wherein R6 and R7 represent independently H or an alkyl,
- it being understood that the groups R1, R2, and R3 may be bound together and form a ring with the nitrogen atom bearing them.
Dependencies are inferred from the claim text.