What aspect of construction materials does "compression ratio" specifically pertain to?

The term "compression ratio" specifically refers to the comparison of volumes within materials under compression. It describes how much a material's volume reduces under a compressive force relative to its original volume. This concept is important in understanding how materials behave when subjected to loads, as the way they compress can affect their overall performance and structural integrity.

In construction and engineering, it is critical to assess how materials will react when forces are applied to them, particularly in applications like foundations and load-bearing elements. Therefore, knowing the compression ratio allows engineers and architects to predict how a material will perform under pressure, ensuring that designs can accommodate expected loads without failing. This understanding contributes to the material selection process, influencing choices based on their compressive properties and behaviors in real-world applications.