### Designing Concrete Mixtures - University of Memphis

Designing Concrete Mixtures There are three phases in the development of a concrete ... Relationship between water/cement ratio and compressive strength of concrete 28-day Compressive Non-AE AE Strength (psi) 2,000 0.82 0.74 ... Volume of dry-rodded coarse aggregate per unit volume of concrete for different coarse aggregates and fineness moduli ...