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SAVING CONCRETE ENERGY

With the growing awareness of the environmental harm of greenhouse gases, one major culprit in the construction industry is beginning to attract attention. The production of Portland cement, a key ingredient of concrete, releases substantial amounts of carbon dioxide (C0₂) — 8 percent of greenhouse gases worldwide. The United States consumes 110 million tons (100 million metric tons) of Portland cement annually and China now produces and places five times that amount.

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