Which of the following is not a factor to be considered when evaluating aggregates for cold weather?

When evaluating aggregates for cold weather applications, several factors are critical to ensuring performance and durability. The color of the aggregate does not significantly influence its performance in cold conditions compared to other factors.

Moisture retention is important because retained moisture can lead to freeze-thaw damage, which is a critical concern in cold weather. Frost susceptibility matters as well, as different aggregates have varying capabilities to withstand freezing and thawing cycles. Compaction under freezing conditions affects how well the aggregate layers will bond and perform under stress; improper compaction can compromise structural integrity when temperatures drop.

Considering these factors, the color of the aggregate is not directly related to its structural or performance characteristics in cold weather, making it less relevant in evaluations for cold weather conditions.