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How does the use of fly ash help the environment?

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How does the use of fly ash help the environment?

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The use of fly ash in concrete improves the environment in a variety of ways. By using fly ash as a partial replacement for portland cement, the production of carbon dioxide emissions is reduced. Every ton of portland cement produced creates approximately one ton of carbon dioxide emissions. Therefore, the use of 20 percent fly ash in a structure containing 500 cubic yards of concrete would reduce CO2 emissions by approximately 25 tons. The use of fly ash improves the durability of concrete and thus improves the expected life cycle, leading to a reduced structure demolition and replacement rate. The use of fly ash also avoids putting the ash into a landfill.

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