Zoom in on your geographic location to find all the certified plants in your area or type your location into the search bar. Click the plant label to get more information about each individual plant. The Ready Mix Concrete plants on this map have been certified by the Atlantic Concrete Association. The Atlantic Concrete Association works to establish and maintain the highest standards of business practices, customs and usage among its members; and promote and encourage the exchange of ideas and information relative to production and use of ready mixed concrete.