Angular & Smooth Aggregate Properties

Angular & Smooth Aggregate Properties

Rough, angular and elongated aggregate particles require more water than smooth rounded aggregates to make the concrete workable. Angular aggregates require more cement than smooth aggregates to maintain the same cement to water ratio. Rough and angular aggregates form larger voids in the concrete mixture than smooth aggregates. More water and cement is used to fill the larger voids in rough and angular aggregates. Rough and angular aggregates form a stronger bond than smooth aggregates. Aggregates should be stored to reduce segregation. Aggregates stored in uniform thin layers segregate less than when they are stored on conical piles. Rough and angular, and small aggregates segregate less than smooth, and large aggregates.