Which is typically the smallest aggregate used in construction?

In construction, aggregates are important materials used to provide strength and stability to structures. Sand is typically the smallest aggregate used among the options provided.

Sand consists of finely grained particles that can vary in size, but it is generally finer than gravel and pea gravel. It is often used in concrete mixtures, mortars, and as a base material for various construction applications. The small size of sand particles allows them to fill spaces effectively and provide a good bonding surface when mixed with cement.

Gravel, granite, and pea gravel, while also used in construction, have larger particles compared to sand. Gravel consists of larger stones and is used for drainage and as a base material, while granite, as a type of rock, is generally not used in its natural state as an aggregate in the same way as sand or gravel; instead, it is crushed into various sizes for specific construction purposes. Pea gravel is also larger than sand and is composed of smooth, rounded stones that are typically about the size of a pea, hence the name.

Considering these factors, sand stands out as the smallest aggregate option in this context.