Asst. Prof,
The use of blended cement is becoming common in these days owing to the attempts made by the researchers in the direction of utilization of materials, which are available in natural abundantly. The new additives fly ash and Recon -3s, which is tried in recent times without any scientific study was found to be satisfactory. While, there is much to be done in order to standardize the properties of the said additives. An attempt is made in the present work to investigate of these additives on the compressive strength of cement concrete. The experimental study of this investigation consists of design of concrete mixes for two different characteristic mean strengths. The mix was worked out giving certain proportions by keeping the obtained water-cement ratio constant.
These two mixes were obtained with water-cement ratio as 0.40. For each of the above mix, Different percentages of additive (fly ash) was replaced, that is 20%, 25% and 30% by weight of cement by keeping the second additive (Recron-3s) as 0.25% by weight of cement.
