Fly ash should be as per IS 3812 part II, to used 
to prepare concrete M60. It should be act as an filler and 
binder so that it should reduce sulphate attack

Destination : Nagpur
Price Quote : C.I.F Destination Rates
Brief Profile : Myself a Quality control engineer for an 
organization Which manufacture Concrete Sleeper for Indian 
Railway. We need flyash as per IS recommendation so that 
to improve our quality.