During the liquid limit test, what is the main goal concerning the soil sample?

The main goal of conducting the liquid limit test is to determine the water content at which a soil changes from a plastic state to a liquid state. This specific transition indicates the upper limit of moisture content where the soil can still be molded or deformed without crumbling or losing its cohesion. By identifying this crucial moisture content, engineers can predict how the soil will behave under different conditions, especially its workability and stability in construction projects.

The ability to ascertain this specific water content provides valuable insights into the soil's characteristics, ultimately influencing design decisions and construction techniques. Understanding where soil behaves plastically is essential for ensuring the stability and performance of structures built with that soil.