Electrically conductive microcapillary composite matrix and method for producing same
OwnerWolfgang Schwarzinventor
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Abstract
An electronically conducting microcapillary composite matrix, produced by applying a painting or coating material on mortar or concrete, is disclosed. The painting or coating material comprises at least one of the following compounds: alumino-silicate of the summation formula aM2O*bAl203*cSiO2, with a ratio of c/b ranging from 1 to 40, preferably ranging from 5 to 20, and a ratio of a/b ranging from 1 to 25, preferably ranging from 5 to 15, with M=Li, Na, K; alumino-hydroxo-complex of the summation formula MxAl(OH)y, with x ranging from 1 to 3 and y ranging from 4 to 6, with M=Na, K; aluminum phosphates, preferably condensed aluminum phosphates in combination with water-soluble alkali silicates.
Claims30
A mortar or concrete product comprising an electrically conductive microcapillary matrix coating material contained in the surface layer of the product, said coating material having admixed therein at least one compound selected from the group consisting of
- (i) alumino-silicates of the summation formula aM2O*bAl2O3*cSiO2, with a ratio c/b ranging from 1 to 40, and a ratio a/b ranging from 1 to 25, and with M representing Li, Na or K,
- (ii) alumino-hydroxo-complexes of the summation formula MxAl(OH)y, with x ranging from 1 to 3 and y ranging from 4 to 6, and with M representing Na or K, and
- (iii) aluminum phosphates, said microcapillary composite matrix having a surface and a specific electric resistance of less than 25 ohm.cm, measured on said surface of said composite matrix.
A composite matrix as set forth in claim wherein said alumino-hydroxo-complex of said coating material is prepared by dissolving an aluminum compound selected from the group consisting of aluminum hydroxide, sodium aluminate and potassium aluminate in at least one of an aqueous soda lye and potash lye, at a total ratio of MOH/Al2O3 greater than 2.0, and with M representing Na or K.
A method for producing a microcapillary composite matrix contained in the surface layer of aporous mineral material for increasing the durability of porous mineral materials, comprising applying an alumino-silicate-based coating to a porous mineral substructure, said coating having admixed thereto at least one compound selected from the group consisting of
- (i) alumino-silicates of the summation formula aM2O*bAl2O3O*cSiO2, with a ratio c/b ranging from 1 to 40, and a ratio a/b ranging from 1 to 25, and with M representing Li, Na or K,
- (ii) alumino-hydroxo-complexes of the summation formula MxAl(OH)y, with x ranging from 1 to 3 and y ranging from 4 to 6, and with M representing Na or K, and
- (iii) aluminum phosphates,
- said microcapillary composite matrix having a surface and a specific electric resistance of less than 25 ohm.cm, measured on said surface of said composite matrix.
A method for producing an electrically conductive microcapillary composite matrix, said composite matrix being formed in a surface layer of mortar or concrete comprising applying an electrically conductive coating material on said mortar or concrete, said coating material having admixed thereto at least one compound selected from the group consisting of
- (i) alumino-silicates of the summation formula aM2O*bAl2O3*cSiO2, with a ratio c/b ranging from 1 to 40, and a ratio a/b ranging from 1 to 25, and with M representing Li, Na or K,
- (ii) alumino-hydroxo-complexes of the summation formula MxAl(OH)y, with x ranging from 1 to 3 and y ranging from 4 to 6, and with M representing Na or K, and
- (iii) aluminum phosphates,
- said microcapillary composite matrix having a surface and a specific electric resistance of less than 25 ohm.cm, measured on said surface of said composite matrix, and applying an electrically conducting paint or an electrically conducting coating to said microcapillary composite matrix.
Dependencies are inferred from the claim text.