Question

In coarse aggregate such as pea stone and gravel that ranges in size due to the required specifications, what is generally the maximum size?

Answer 1

The maximum size of coarse aggregate depends on the required specifications and the intended use, typically ranging from 20-25 mm (0.75-1 inch) in building construction. However, larger sizes may be allowed for special applications.

Step-by-step explanation:

The maximum size of coarse aggregate such as pea stone and gravel depends on the required specifications. In general, the maximum size is determined based on the use of the aggregate and the desired strength of the concrete or asphalt mixture it will be used in.

For example, in concrete, the maximum size of coarse aggregate is often limited to 20-25% of the smallest dimension of the concrete element being poured, such as a column or beam.

This limitation is imposed to ensure good workability of the concrete mixture and to minimize voids between the aggregate particles. The maximum size also affects the strength and durability of the finished structure, as smaller aggregate particles tend to provide better interlocking and bonding within the concrete matrix.

For example, in a typical concrete mix for building construction, the maximum size of coarse aggregate is usually around 20-25 mm (0.75-1 inch). However, in some special applications such as heavy-duty concrete for dam construction, larger maximum sizes may be allowed, up to 40 mm (1.5 inches) or even more.