Which term describes aggregates that almost entirely pass through the #4 sieve and are largely retained on the #200 sieve?

The correct choice describes fine aggregates, which typically consist of particles that are small enough to pass through a #4 sieve and are predominantly retained on a #200 sieve. The #4 sieve has openings of 4.76 mm, while the #200 sieve has much smaller openings, measuring 0.075 mm. This characteristic size range allows fine aggregates to fill voids in coarser materials, improving the workability and stability of concrete or asphalt mixtures.

Fine aggregates play a crucial role in the formulation of concrete mixes, as they not only contribute to the composite’s strength but also influence its overall texture, finish, and durability. Knowing the specific sizes that qualify aggregates as fine is essential for engineers and construction professionals when determining the right materials for specific applications.

In contrast, coarse aggregates are larger particles that do not predominantly pass through the #4 sieve, and gravel aggregates can refer to any combination of larger stones and materials. Sand aggregates may also be a form of fine aggregate, but the term fine aggregates is the more precise and widely recognized terminology in technical contexts.