To allow the slab to be moved after the World of Concrete, pervious concrete was placed in two layers with fibers and a layer of epoxy-coated rebar.
Pervious concrete was placed slightly above the sideforms to allow some compaction during finishing.
The slab was finished with a Bunyan skip float to improve the surface texture and then covered with plastic for wet curing.
The logo art and lettering was formed from plastic templates that were laser cut to shape and connected with small ribs to hold it all in alignment.
The thin plastic sheeting formed a slight radius as it stretched into the edges of the stamped zones.
All of the formal practices of moist curing were observed including installation of 6 mil polyethylene sheeting. We did not use superabsorbent polymer.
Early on Day 2, the plastic was removed and the surface was sprayed with The Bean as a cure and penetrating sealer.
The artwork templates were carefully placed back into the embedded spaces to prevent colors from mixing.
Black Eyed Peas is a ¼-inch cubic black basalt aggregate that was mixed with a clear polyaspartic binder.
Six different colors were used, each representing a color of one of ACI's previous logos over the past century.
Despite all of the work done to the surface, the slab remains compeltely pervious to allow drainage.