What is the primary purpose of performing gradation tests?

The primary purpose of performing gradation tests is to ensure specifications are met. Gradation tests analyze the particle size distribution of aggregates used in concrete and other construction materials. This is crucial because the size and distribution of aggregates significantly impact the material's strength, workability, durability, and overall performance. Meeting the specified gradation criteria ensures that the mix will behave as intended, fulfilling both engineering performance requirements and maintaining consistency in the final product.

While other options may be relevant in a broader context of construction and materials management, they do not directly reflect the primary role of gradation testing. Cost assessment, aesthetics, and worker safety are important considerations, but they do not pertain to the specific analytical focus of evaluating how well the material complies with established gradation specifications.