Apparatus, components, methods and systems for use in selectively texturing concrete surfaces

Abstract

Apparatuses, components, methods, and techniques for selectively texturing concrete surfaces are provided. An example method of providing a surface portion of an architectural precast concrete wall panel with an abraded texture is provided. The method includes a step of spraying a surface portion of an architectural precast concrete wall panel with an aqueous-based particulate abrasive mixture under conditions adequate to at least partially abrade the surface portion. An example sprayer system for abrading a concrete surface is also provided. The system includes an aqueous-based particulate abrasive mixture dispenser including a spray nozzle arrangement. The system also includes a material communication assembly in abrasive flow communication with the aqueous-based particulate abrasive mixture dispenser. The system also includes a dispenser positioning arrangement.

1 - 20 . (canceled) 
     
     
         21 . A method of providing a surface portion of an architectural precast concrete wall panel with an abraded texture, the method including a step of:
 spraying at least a surface portion of an architectural precast concrete wall panel with a first stream including an aqueous-based particulate abrasive mixture under conditions adequate to at least partially abrade the surface portion and simultaneously spraying a second stream onto the precast concrete wall panel.   
     
     
         22 . The method of  claim 21 , wherein the second stream is one of a wash solution and an aqueous-based particulate abrasive mixture. 
     
     
         23 . A sprayer system for abrading a concrete surface, the system comprising:
 an aqueous-based particulate abrasive mixture dispenser including a spray nozzle arrangement;   a material communication assembly that allows abrasive flow communication to the aqueous-based particulate abrasive mixture dispenser; and   a dispenser positioning arrangement.   
     
     
         24 . The system of  claim 23  wherein the material communication assembly includes a flowable aqueous-based particulate abrasive mixture therein. 
     
     
         25 . The system according to  claim 23 , wherein the material communication assembly comprises:
 an aqueous-based particulate abrasive mixture delivery assembly connected to the aqueous-based particulate abrasive mixture dispenser via a material communication assembly; and   a material communication conduit assembly.   
     
     
         26 . The system of  claim 23 , wherein the spray nozzle arrangement comprises a first spray nozzle and a second spray nozzle. 
     
     
         27 . The system of  claim 26 , wherein the first spray nozzle and the second spray nozzle are oriented in a substantially same direction. 
     
     
         28 . The system of  claim 26 , wherein the second spray nozzle is offset vertically from the first spray nozzle. 
     
     
         29 . The system of  claim 26 , wherein the second spray nozzle is offset horizontally from the first spray nozzle. 
     
     
         30 . The system of  claim 26 , wherein the aqueous-based particulate abrasive mixture dispenser includes a spray nozzle actuator assembly that is connected to the spray nozzle assembly and selectively actuates a spatial attribute of the spray nozzle assembly. 
     
     
         31 . The system of  claim 30 , wherein the spatial attribute comprises a position of the spray nozzle within the aqueous-based particulate abrasive mixture dispenser. 
     
     
         32 . The system of  claim 30 , wherein the spatial attribute comprises an orientation of the spray nozzle. 
     
     
         33 . The system of  claim 24 , wherein the spray nozzle actuator assembly selectively actuates a spatial attribute of the spray nozzle in a circular motion. 
     
     
         34 . An aqueous-based particulate abrasive mixture dispenser apparatus for abrading a concrete surface, the apparatus comprising:
 a vapor abrasive material receiver;   a spray nozzle arrangement connected to the vapor abrasive material receiver; and   spatial attribute adjustment motor assembly that is connected to the spray nozzle arrangement.   
     
     
         35 . The apparatus of  claim 34 , wherein the aqueous-based particulate abrasive mixture dispenser further includes a second spray nozzle and the motor is configured to adjust a spatial attribute of the second spray nozzle. 
     
     
         36 . The apparatus of  claim 34 , wherein the second spray nozzle is disposed in an orientation parallel to an orientation of the first spray nozzle. 
     
     
         37 . The apparatus of  claim 34 , wherein the second spray nozzle is offset vertically from the first spray nozzle. 
     
     
         38 . The apparatus of  claim 34 , wherein the second spray nozzle is offset horizontally from the first spray nozzle. 
     
     
         39 . The apparatus of  claim 35 , wherein the spatial attribute comprises a position relative to the aqueous-based particulate abrasive mixture dispenser. 
     
     
         40 . The apparatus of  claim 34 , wherein the spatial attribute comprises an orientation.