Pigment paste for concrete and method for making the same

Abstract

A pigment paste and a method for making the same that alters the appearance of concrete such that, after the concrete sets, it resembles natural stone (e.g., marble, granite, sandstone, bluestone, etc.) without separately applying a finish of any kind to the concrete are provided. The pigment paste preferably comprises a filler, a pigment, an anti-foaming agent, a surfactant, and water. In some embodiments, the surfactant is a water reducing admixture. A concrete compound having a finish resembling natural stone is made by combining the pigment paste with a concrete mix, which includes a cementitious material with aggregate and water, and a chemical admixture. Upon adding the pigment paste and mixing it, the cementitious material is allowed to set, where, after it sets, the concrete has a finish resembling natural stone.

1 - 21 . (canceled)  
     
     
         22 . A concrete compound comprising: 
 a concrete mix that includes a cementitious material with aggregate and water;    a chemical admixture; and    a pigment paste, wherein the paste comprises: 
 a filler;  
 a pigment;  
 an anti-foaming agent;  
 a surfactant; and  
 water.  
   
     
     
         23 . The composition of  claim 22  wherein the filler is FILLITE.  
     
     
         24 . The composition of  claim 22  wherein the pigment is chromium oxide.  
     
     
         25 . The composition of  claim 22  wherein the pigment is titanium oxide.  
     
     
         26 . The composition of  claim 22  wherein the anti-foaming agent is FOAMASTER PD-1.  
     
     
         27 . The composition of  claim 22  wherein the surfactant is LOMAR D.  
     
     
         28 . The composition of  claim 22  wherein the surfactant is TAMOL.  
     
     
         29 . The composition of  claim 22  wherein the surfactant comprises a sulfonate-formaldehyde condensation product.  
     
     
         30 . The composition of  claim 22  wherein the surfactant is a water reducing admixture.  
     
     
         31 . The composition of  claim 22  wherein the chemical admixture is naphthalene sulphonate-formaldehyde condensate.  
     
     
         32 . The composition of  claim 22  wherein the chemical admixture is melamiune-formaldehyde.  
     
     
         33 . The composition of  claim 22  further comprising at least one fiber.  
     
     
         34 . The composition of  claim 33  wherein the at least one fiber is selected from the group consisting of ASR resistant glass fiber, polypropylene fiber, nylon fiber, and steel fiber.  
     
     
         35 . A method for creating a concrete compound comprising: 
 providing a concrete mix that includes a cementitious material with aggregate and water;    adding a chemical admixture to the concrete mix;    mixing the concrete mix and the chemical admixture for a first given time;    adding a pigment paste to the concrete mix and the chemical admixture;    mixing the pigment paste, the chemical admixture, and the concrete mix for a second given time; and    allowing the concrete mix, the pigment paste, and the chemical admixture to set, wherein it has a finish resembling a natural stone.    
     
     
         36 . The method of  claim 35  wherein the filler is FILLITE.  
     
     
         37 . The method of  claim 35  wherein the pigment is chromium oxide.  
     
     
         38 . The method of  claim 35  wherein the pigment is titanium oxide.  
     
     
         39 . The method of  claim 35  wherein the anti-foaming agent is FOAMASTER PD-1.  
     
     
         40 . The method of  claim 35  wherein the surfactant is LOMAR D.  
     
     
         41 . The method of  claim 35  wherein the surfactant is TAMOL.  
     
     
         42 . The method of  claim 35  wherein the surfactant comprises a sulfonate-formaldehyde condensation product.  
     
     
         43 . The method of  claim 35  wherein the surfactant is a water reducing admixture.  
     
     
         44 . The method of  claim 35  wherein the chemical admixture is naphthalene sulphonate-formaldehyde condensate.  
     
     
         45 . The method of  claim 35  wherein the chemical admixture is melamine-formaldehyde.  
     
     
         46 . The method of  claim 35  further comprising consolidating the cementitious material while the cementitious material is allowed to set.  
     
     
         47 . The method of  claim 46  wherein the consolidating further comprises vibrating the cementitious material with a vibration table.  
     
     
         48 . The method of  claim 35  further comprising adding at least one fiber to the cement mix.  
     
     
         49 . The method of  claim 48  wherein the at least one fiber is selected from the group consisting of ASR resistant glass fiber, polypropylene fiber, nylon fiber, and steel fiber.  
     
     
         50 - 65 . (canceled)