What occurs if the moisture content during the Proctor test is too high?

When the moisture content during the Proctor test is too high, the soil cannot achieve optimal compaction. This is because an excess of water creates a condition where the soil particles are separated by water films, reducing the inter-particle friction and preventing the particles from packing closely together. As a result, the soil will not reach its maximum dry density, which is the primary goal of the Proctor test. Achieving maximum density is critical for ensuring stability and strength in construction materials, so a high moisture content directly compromises that objective. Understanding this principle is fundamental in soil compaction efforts in construction and engineering projects.