What does the absorption factor refer to in aggregate materials?

The absorption factor is a critical parameter in the characterization of aggregate materials, particularly in the context of concrete and construction. It describes the maximum amount of water that the aggregate can absorb when it is in a dry condition, expressed as a percentage of its dry weight. This measure is crucial for understanding the behavior of aggregates in concrete mixtures, as excessive absorption can lead to a decrease in the effective water-cement ratio and potentially influence the durability and strength of the resulting concrete.

Recognizing the absorption factor helps in predicting how aggregates will react in both fresh and hardened states, which is vital for ensuring the structural integrity and performance of concrete structures. In contrast, the other options do not accurately represent the concept of absorption in aggregate materials, focusing instead on different properties that do not relate directly to the maximum absorption capability.