How does temperature variations affect aggregate performance?

Temperature variations can significantly impact the performance of aggregates, particularly regarding their moisture content, which directly affects the strength and durability of the material in construction. As temperature increases, moisture may evaporate from the surface of the aggregates, leading to a dryer mix that can influence the performance characteristics such as workability, adhesion, and overall strength of the concrete or asphalt. Conversely, in colder conditions, aggregates may retain more moisture, which can also lead to issues such as freeze-thaw cycles causing expansion and cracking if not properly managed.

Understanding these temperature-related effects is crucial for ensuring the stability and longevity of structures that utilize these aggregate materials. This highlights the importance of considering environmental conditions during the mixing and application processes to maintain desired material properties and structural integrity.