Which situation is specifically problematic with conveyor-built stockpiles?

Conveyor-built stockpiles are especially prone to segregation due to the method of material placement. When aggregates are deposited from a conveyor, the speed and angle can cause larger particles to separate from smaller ones as they are dropped. This results in a stockpile with uneven distribution of particle sizes, which is considered segregation. It can lead to complications in material quality because the mixture may not perform as intended if larger and smaller aggregates are not proportionally present. Ensuring the material is well-mixed is crucial for achieving the desired characteristics in the final product.

While pressure buildup, weight distribution, and moisture retention are relevant concerns in various aggregate placement methods, they do not uniquely highlight the challenges posed by conveyor-building techniques to the same extent as segregation does.