What is the goal of the compaction test for aggregate bases?

The primary goal of the compaction test for aggregate bases is to evaluate density and stability of the aggregate. This testing process is crucial because it helps ensure that the aggregate layer achieves sufficient density, which contributes to the overall stability and strength of the pavement structure. Proper compaction minimizes voids within the aggregate material, reduces the likelihood of settlement, and enhances load-bearing capabilities.

Density refers to the mass of the aggregate within a given volume, which directly affects how well the material can support applied loads. Monitoring stability is also vital since it reflects the material's ability to maintain its structure under stress. A well-compacted aggregate base prevents issues such as shifting or deformation, which could lead to pavement failure over time.

While moisture absorption, weight determination, and particle size measurement are important factors in aggregate quality, they do not directly relate to the specific objective of the compaction test, which focuses on achieving optimal density and ensuring the material remains stable under use conditions.