Method for the reduction of the degree of shrinkage of hydraulic binders
AssigneeSika AG, vorm. Kasper Winkler & Co.
InventorsFranz Wombacher, Theodor A. Burge, Urs Mader
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Abstract
On object of the present invention is an agent for the reduction of the degree of shrinkage in hydraulic binders, whereby said comprises an alkanolamine of formula R—NH—(AOH) wherein R is hydrogen or a linear or branched aliphatic or cyclic C1-C6-alkyl group, and A is a C2H4-group or C3H6-group, alone or in combination with hydroxy compounds and/or ethers. Furthermore a method for the reduction of the dry shrinkage of binders such as cement, admixed cement, puzzolanas and thereof produced mortars and concretes by means of such a shrinkage reducing agent is described.
Claims16
An agent for the reduction of the degree of shrinkage of hydraulic binders containing or consisting of
- a) at least one alkanolamine of formula I
- R—NH—(AOH) I,
- wherein R is hydrogen or a linear or a branched aliphatic or cyclic C1-C6-alkyl group, and A is a C2H4- or C3H6-group, alone or in combination with
- b) at least one hydroxy compound and/or
- c) at least one ether compound.
Dependencies are inferred from the claim text.