Here are the exact mix designs (exact combination of all the ingredients to make concrete in the appropriate strength).  The higher the number of the mix design, the stronger the concrete is.  PSI stands for a rating of strength in Pounds per Square Inch.

Click on any link to download a pdf document containing the details of the mix.

CDF (Controlled Density Flowfill)

2,500 PSI Mix Design

3,000 PSI Mix Design

3,500 PSI Mix Design

4,000 PSI Mix Design

4,500 PSI Mix Design

5,000 PSI Mix Design