United States Department of Transportation
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Optimization of soil stabilization with class C fly ash.
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1987-01-01
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[PDF-2.44 MB]
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Edition:Final report.
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Abstract:Previous Iowa DOT sponsored research has shown that some Class
C fly ashes are cementitious (because calcium is combined as calcium
aluminates) while other Class C ashes containing similar amounts of
elemental calcium are not (1). Fly ashes from modern power plants in
Iowa contain significant amounts of calcium in their glassy phases,
regardless of their cementitious properties. The present research
was based on these findings and on the hyphothesis that: attack of
the amorphous phase of high calcium fly ash could be initiated with
trace additives, thus making calcium available for formation of
useful calcium-silicate cements.
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