Architectural concrete and method of forming the same

Abstract

A method of forming an architectural concrete structure having a desired look (i.e., color) and texture, wherein the method generally includes pouring a base concrete layer using conventional concrete. A surface concrete mixture is prepared and includes a mixture of sand and small aggregates to give the surface concrete mixture the desired color and texture for the architectural concrete structure. The base concrete layer provides strength and durability to the concrete structure, while the surface concrete layer provides the desired look and texture of the concrete surface. The surface concrete mixture preferably includes small aggregates to create a smooth and uniform texture.

1 . A method of forming architectural concrete, the method comprising the steps of:
 pouring a base concrete mixture in an unhydrated state to define a base concrete layer, the base concrete mixture including large aggregate;   preparing a surface concrete mixture including small aggregate and sand, the small aggregate being smaller than the large aggregate used in the base concrete mixture, the small aggregate and sand being mixed to define a prescribed color; and   pouring the surface concrete mixture over the base concrete layer while the base concrete mixture is in the unhydrated state, the surface concrete mixture defining a surface layer.   
     
     
         2 - 20 . (canceled)