Aggregate in different size has been known to be one of the concrete properties in strength development of any grades. The
study evaluates the sizes of aggregate in heterogeneous condition to determine their various rate of effect to the optimum required
strength. These are determined on the design grade required based on the imposed loads evenly distributed, the study precisely
monitored the impact of heterogeneity of aggregate size at different mixed proportion, the size and shapes of aggregate were
considered in the study integrated with Metakaolin content at different dosage, the study observed linear growth to the optimum
level recorded at twenty eight days of curing, various predictive values were generated to monitor the variationof developed strength
influenced by heterogeneous aggregate size, it is observed that the larger the size, the lower surface for the development of the gel
bonds, these were monitored and evaluated based on the developed modeling techniques, other observation shows that the bigger
size of aggregate on heterogeneous level inconcrete mix prevent the uniformity of load distribution,when it experience stress.
Compactions of the concrete were other parameter that displayed its effect on the variation of strength as it experienced the effect
on this condition, while others include the cement-aggregate ratios and curing time. The predictive values were compared with
experimental data for model validation, and both parameters developed best fits correlation, the study is imperative because the
effect of aggregate size and shapes has be evaluated, there rate of impact on concrete strength partially replaced with Metakaolin
has been determined.
Keywords: Modeling heterogeneous, Aggregate Metakaolin and compressive strength