Reverting colored concrete and rinse water to gray
First Claim
1. A method for reverting uncured colored concrete in a vessel to gray, the colored concrete comprising gray concrete and a pigment formulation at a loading, the method comprising:
- determining an amount of red pigment, an amount of black pigment, an amount of yellow pigment, and an amount of green pigment in the pigment formulation; and
adding a reversion pigment mixture to the colored concrete in the vessel, the reversion pigment mixture based on the amount of red pigment, the amount of black pigment, the amount of yellow pigment, and the amount of green pigment, wherein the reversion pigment mixture is at least one of the following;
(1) if the amount of red pigment is greater than 15 wt-% of the pigment formulation, then selecting the reversion pigment mixture to revert red to gray,(2) if the amount of black pigment is greater than 15 wt-% of the pigment formulation, then selecting the reversion pigment mixture to revert black to gray,(3) if the amount of yellow pigment is greater than 20 wt-% of the pigment formulation, then selecting the reversion pigment mixture to revert yellow to gray, and(4) if the amount of green pigment is greater than 10 wt-% of the pigment formulation, then selecting the reversion pigment mixture to revert green to gray.
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Abstract
A simple and easily useable system for reverting an uncured colored concrete material back to a gray color, by merely determining the original pigment and loading initially used to color the concrete material. The system utilizes a collection of pigment mixtures that can be selected and combined as needed to revert virtually any colored concrete back to a gray color, thus eliminating or reducing the expulsion of non-gray or colored concrete and/or dirty rinse water. Additionally, the volume of rinse water needed to clean out gray concrete is significantly less than that needed to clean out colored concrete.
15 Citations
15 Claims
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1. A method for reverting uncured colored concrete in a vessel to gray, the colored concrete comprising gray concrete and a pigment formulation at a loading, the method comprising:
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determining an amount of red pigment, an amount of black pigment, an amount of yellow pigment, and an amount of green pigment in the pigment formulation; and adding a reversion pigment mixture to the colored concrete in the vessel, the reversion pigment mixture based on the amount of red pigment, the amount of black pigment, the amount of yellow pigment, and the amount of green pigment, wherein the reversion pigment mixture is at least one of the following; (1) if the amount of red pigment is greater than 15 wt-% of the pigment formulation, then selecting the reversion pigment mixture to revert red to gray, (2) if the amount of black pigment is greater than 15 wt-% of the pigment formulation, then selecting the reversion pigment mixture to revert black to gray, (3) if the amount of yellow pigment is greater than 20 wt-% of the pigment formulation, then selecting the reversion pigment mixture to revert yellow to gray, and (4) if the amount of green pigment is greater than 10 wt-% of the pigment formulation, then selecting the reversion pigment mixture to revert green to gray. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for reverting uncured colored concrete in a vessel to gray, the method comprising:
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determining an amount of red pigment, an amount of black pigment, an amount of yellow pigment, and an amount of green pigment in a pigment formulation in an uncured colored concrete; adding water to the colored concrete in the vessel; adding a reversion pigment mixture to the colored concrete in the vessel, the reversion pigment mixture based on the amount of red pigment, the amount of black pigment, the amount of yellow pigment, and the amount of green pigment, wherein the reversion pigment mixture is at least one of the following; (1) if the amount of red pigment is greater than 15 wt-% of the pigment formulation, then selecting the reversion pigment mixture to revert red to gray, (2) if the amount of black pigment is greater than 15 wt-% of the pigment formulation, then selecting the reversion pigment mixture to revert black to gray, (3) if the amount of yellow pigment is greater than 20 wt-% of the pigment formulation, then selecting the reversion pigment mixture to revert yellow to gray, and (4) if the amount of green pigment is greater than 10 wt-% of the pigment formulation, then selecting the reversion pigment mixture to revert green to gray; and after adding the reversion pigment mixture and the water in the vessel, dumping gray rinse water from the vessel. - View Dependent Claims (10, 11, 15)
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12. A method for reducing concrete rinse water, the method comprising:
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determining a pigment formulation and loading in an uncured colored concrete in a ready-mixed concrete truck, the pigment formulation having an amount of red pigment, an amount of black pigment, an amount of yellow pigment, and an amount of green pigment; adding no more than about 100 gallons of rinse water to the truck; after adding the rinse water in the truck, adding a reversion pigment mixture to the colored concrete in the truck; and after adding the reversion pigment mixture in the truck, dumping gray rinse water from the truck. - View Dependent Claims (13, 14)
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Specification