What is one major impact that particle shape has on the performance of aggregates in construction?

Particle shape is a crucial factor in determining the performance of aggregates in construction. The way aggregate particles are shaped influences both their workability and strength when mixed into concrete or other construction materials.

Workability refers to how easily the material can be manipulated and formed during construction. For instance, aggregates with more angular shapes create interlocking between particles, leading to a denser mix that can be harder to work with but provides greater strength. Conversely, rounded particles tend to enhance flow and workability, allowing for easier placement and compaction yet may compromise some strength when compared to more angular shapes.

Strength is affected by particle shape as well. Aggregate shapes that provide a better fit and interlock tend to enhance the overall strength of the concrete mix. This is essential because strong concrete requires not just high cement content but also a well-graded aggregate that maximizes contact points and minimizes voids.

In summary, the shape of the aggregate plays a vital role in how well a concrete mixture will perform, affecting both workability during the mixing and placement stages as well as the final strength of the constructed element. This is why the statement about the impact of particle shape on workability and strength is accurate.