Having an aggregate structure that is continuously graded (sized) from the largest to the smallest aggregate in the system describes which type of mixtures?

A continuously graded aggregate structure refers to a mixture where the aggregate particles are distributed across a full range of sizes, from the largest down to the smallest, which allows for efficient packing and optimal void content. This type of grading is characteristic of dense graded mixtures, as it promotes full compaction and minimizes the voids between aggregate particles. The result is a strong, durable asphalt concrete that is well-suited for a variety of paving applications.

Dense graded mixtures are designed to achieve a high density and a low air void content, which in turn enhances the longevity and performance of asphalt pavements. These mixtures typically contain a balanced proportion of coarse and fine aggregates, allowing them to meet the specific requirements for strength and stability in asphalt applications.

On the other hand, open and gap-graded mixtures do not feature continuous grading throughout the aggregate sizes. Open graded mixes, for example, have larger voids and are primarily comprised of larger aggregate particles, which can enhance drainage properties but compromise density. Gap graded mixes include certain sizes while omitting others, leading to a reduction in the overall range of particle sizes, which does not support the continuous grading described. Recycled and rubberized mixtures refer to different materials used in the mix but do not inherently dictate the grading