1:)sir, can anyone please help me out regarding this topic:----How far it is true that now a days mineral admixtures require chemical admixtures in concrete, also, what is the dosage which we should replace by cement content.

2:)

a) Did any one do a project work regarding the following topic, if so then where can i get the link regarding it,
effect on properties of concrete by using fly-ash + silica-fume+slightly acidic substances.
effect on properties of concrete by using fly-ash + slightly acidic substances.
advance thanks to my friends ......