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Figure 6.Typical joint layout for colored crosswalk with stamped brick boundary <br /> Construction <br /> The normal precautions for constructing concrete pavements are important for success with colored <br /> concrete. Not only must batching, mixing, and placing practices be uniform, but manufacturers and <br /> sources of materials must remain constant throughout the project. To maintain color and texture <br /> consistency, try to keep the number of construction phases as low as possible.. <br /> Many communities require a sample be cast before the work begins as a comparison to the ensuing <br /> placements. Areas of shade and sun should be watched carefully, as this can affect the timing of <br /> stamping dramatically. The speed of the stamping crew is usually the restraining factor on production. <br /> Clean forms as well as non-staining release agents are vital when using fixed forms in lieu of a slipform <br /> paver. Check the pigment manufacturers' recommendations for release agents, and test the curing <br /> procedures on a mock-up before construction. Wet curing can affect color adversely, and in most cases <br /> membrane-forming curing compounds are more suitable. Plastic sheeting can also be used if there are <br /> concerns about white-pigmented curing compound. <br /> References <br /> "Color and Texture in Architectural Concrete," Portland Cement Association, SP012.02A, 1995. <br /> _ Number 5.03 March 2004 !gNCNN cpNV American Concrete Pavement Association <br /> Q <br /> 4 ,!��� 5420 Old Orchard Rd. <br /> e m Suite Al 00 <br /> Skokie, IL 60077 <br /> p Phone: 847-966-2272 <br /> F� �P Fax: 847-966-9970 <br /> FNrAss www.pavement.com <br />