As per the note of table 5 of this code of practice addition of fly ash quantity can be taken into account in the concrete composition with respect to cement content and water cement ratio.
Replacement of cement by fly ash in concrete.
As a concrete pozzolan fly ash was never ideal.
Why should you consider fly ash concrete.
In 2005 acaa.
The future of fly ash as a readily available and quality effective concrete pozzolan is murky and troubled.
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.
The paste is the key to strong and durable concrete assuming average quality aggregates are used.
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.
Fly ash can significantly improve the workability of concrete.
Utilization of fly ash in concrete began for example usbr 1948 follow ing the pioneering research conducted at the university of california berkeley davis 1937 the last 50 years has seen the use of fly ash in concrete grow dramatically with close to 15 million tons used in con crete concrete products and grouts in the u s.