How does particle shape influence the compaction of aggregate?

The influence of particle shape on the compaction of aggregate is crucial, and angular particles are particularly beneficial in this context. Angular particles have sharp edges and corners, which provide a higher degree of interlock when compacted together. This interlocking effect enhances the stability and density of the aggregate mass, allowing for increased compaction.

When aggregates are compacted, the shape of the particles affects how they fit together. Angular particles tend to occupy less space when compacted because they can fit into the voids of surrounding particles more effectively, creating a denser packing structure. This characteristic allows for better load distribution and ultimately contributes to the strength of the material.

Other shapes, like rounded particles, may not fit together as tightly because they lack those edges that create interlocking. This can lead to lower compaction density and might affect the performance of the base material, especially under heavy loads. Thus, understanding the impact of particle shape is essential for achieving optimal compaction and performance in construction applications.