What is meaning of 98 percent compaction?

98 percent compaction refers to the level of density achieved in a soil or material after it has been compacted, indicating that it is 98 percent as dense as the maximum density possible for that material. This measurement is crucial in construction and civil engineering, as it ensures that the ground or substrate is stable and can support structures effectively. Achieving this level of compaction helps minimize settlement and enhance the load-bearing capacity of the soil.