Additive formulation for reduction or prevention of microbially induced corrosion in concrete or cementitious material
AssigneeMicroban Products Company
InventorsBurke Irving Nelson, Ivan Weikang Ong, Glenner Marie Richards, Daniel Ray Matthews
Life of this patent
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Abstract
An additive formulation for reduction or prevention of microbially induced corrosion in concrete, cementitious material (such as mortar or grout), or a combination thereof. The additive formulation comprises a Quat Silane and a fungicide, wherein the ratio of the Quat Silane to the fungicide in the formulation is in a range of about 10:1 to about 1:10, preferably in a range of about 5:1 to about 1:5.
Claims23
A formulation comprising:
- a material that is in a wet-state in which the material is an uncured concrete, an uncured cementitious material, or a combination thereof,
- a Quat Silane that cures on and within the material,
- a fungicide,
- a defoamer from about 2 weight % to about 25 weight % of the amount of the Quat Silane in the formulation, and
- an additive comprising an accelerant, a corrosion inhibitor, or a combination thereof.
A method of making a formulation, the method comprising:
- combining a material that is in a wet-state in which the material is an uncured concrete, an uncured cementitious material, or a combination thereof with a Quat Silane that cures on and within the material, a fungicide, and a defoamer, wherein the defoamer is added at a concentration from about 2 weight % to about 25 weight % of the amount of the Quat Silane in the formulation.
A method of reducing corrosion in concrete or cement, the method comprising:
- adding a formulation to uncured concrete or uncured cement, wherein the formulation comprises
- (i) a Quat Silane configured to cure on and within the uncured concrete or the uncured cement;
- (ii) a fungicide selected from the group consisting of sodium orthophenylphenol, imazalil sulphate, diiodomethyl-p-tolylsulfone, carbamate, isothiazolinone, azole, chlorothalonil, zinc pyrithione, copper pyrithione, sodium pyrithione, and a combination thereof, the Quat Silane and fungicide are present in the formulation in a ratio from 10:1 to 1:10;
- and
- (iii) a defoamer from about 2 weight percent to about 25 weight % of the amount of Quat Silane in the formulation.
Dependencies are inferred from the claim text.