ACI Aggregate Level 1 case studies

The ACI Aggregate Level 1 certification is an entry-level credential for technicians who sample and test construction aggregates - crushed stone, sand, gravel, and recycled materials - in the laboratory and the field. It is aimed at new laboratory staff, quality-control technicians at aggregate producers and ready-mix plants, and field personnel who need a documented, verifiable baseline of aggregate testing competence. The exam is multiple choice and samples broadly across the aggregate testing workflow: obtaining a representative sample and reducing it without introducing bias, moisture and density determination, sieve analysis and gradation interpretation, specific gravity, absorption, unit weight and voids, soundness and durability testing, specification limits and acceptance decisions, equipment verification, and laboratory safety and reporting. Expect questions that test procedural judgment - why a step exists and what goes wrong when it is skipped - rather than only definitions. The ACI Aggregate Level 1 case studies are 5 cases and about 1,864 words.