Aggregate Optimization: The Biggest Untapped Lever in Concrete Mix Design
Walk into any ready-mix plant, and you’ll find the same paradox. Producers fine-tune cement to the kilogram, dose admixtures to the milliliter, and debate supplementary materials for hours, yet the single largest component of the mix, the one bought by the truckload, is still managed largely by feel. Aggregates make up roughly 75% of a concrete mix by volume, and they remain the least actively optimized ingredient in the batch. Meanwhile, the industry quietly overdesigns mixes in cementitious content by more than 20% on average, and roughly half of that buffer exists for no better reason than to absorb variability that current systems can’t see or manage. Let’s take a look at how aggregate optimization works, why it decides far more about strength, slump, and cost than most producers give it credit for, and how an AI mix-optimization platform like…