Correlation between mortar and concrete behavior using rheological analysis

Workability of mortars and concretes, prepared with different amounts of metakaolin and diatomite, were controlled either with water or a water reducing admixture. A direct relationship was observed between the rheological parameters of mortars and its corresponding concretes. Formulations with metakaolin show a linear correlation between the mortars and the corresponding concretes compressive strength. Values of the mortars's compressive strength was 84% of the ones of corresponding concretes. Although without a linear correlation, in compositions with diatomite where the workability adjustment was done with a water reducing agent, the values of mortars's compressive strength were also 85% of the values of corresponding concretes.