The future of fly ash as a readily available and quality effective concrete pozzolan is murky and troubled.
Replacement of cement by fly ash in concrete.
But it was cheap the by product of burning coal and within a restricted class type class f effective.
Recently techniques have been developed to replace partial cement with high volume fly ash 50 cement replacement.
In some cases fly ash can add to the concrete s final strength and increase its chemical resistance and durability.
Different concrete samples prefabricated with various quantities of copper slag vary up to 0 to 60 as fine aggregates substitution and 20 as fly ash replacement with cement.
Why should you consider fly ash concrete.
In 2005 acaa.
Fly ash can significantly improve the workability of concrete.
The paste is the key to strong and durable concrete assuming average quality aggregates are used.
At full hydration concrete made with regular cements produce approximately 1 4 pound of non durable lime per pound of cement in the mix.
As a concrete pozzolan fly ash was never ideal.