What is a major issue linked with multi-layered stockpiles?

The issue of degradation is significant when it comes to multi-layered stockpiles in aggregate management. In a multi-layered stockpile, various layers of material may not intermingle effectively, leading to conditions where the top layers can break down or degrade over time. This degradation often occurs due to factors such as weather exposure, crushing from weight, and the aging of the materials themselves.

As aggregates sit in stockpiles, especially in layered formats, the particles can become compacted or crushed under the weight of the layers above. This degradation results not only in the loss of material integrity but can also alter the particle size distribution, affecting the performance of the aggregate when used in mixtures.

In contrast, while contamination, segregation, and accumulation may also pose problems in the management of aggregate stockpiles, degradation specifically highlights the structural integrity and material quality concerns associated with how multi-layered stockpiles are organized and maintained over time. This distinction is crucial for technicians to understand to ensure the quality of materials used in construction applications.