Presentation

• Annually, in the U.S. there are more than 50
million tons of unused fly ash, causing enormous
disposal cost and environmental problems
• The unused fly ashes in landfills are subjected to
weathering, and leachate sometimes leads to
groundwater contamination
• In Thailand, there are more than 30 million tons of
weathered fly ash at Mae Moh alone
• Beneficial utilization of these industrial byproducts
would help sustain both the utility and
the cement industry
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