The Fly Ash Revolution:
Making Better Concrete with Less Cement

Two and a half months ago, a ship left Thailand loaded with Portland cement. It spent three weeks crossing the ocean and another week going through the Panama Canal before docking in New Orleans, where its cargo was transferred to barges. These barges then spent six weeks traveling up the Mississippi to Minneapolis, where the cement is now arriving at batch plants for use in concrete. Over 80 million metric tons of cement were produced last year in the U.S., but another 20 million were imported to meet the demands of our booming economy.
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