Compactibility
Earl J. Felt · Agronomy monograph/Agronomy · 1965
In the construction of roadway and runway bases, earth dams, and embankments, however, both the density and water content can be controlled readily, and the compactibility behavior of the soil employed is of great importance. The compactibility relationships measured in the laboratory are generally assumed to apply to compaction in the field. In the field, compactibility relationships depend to some extent on the type of equipment used for compaction. Equipment utilized in the field is of three principal types: rollers, including sheepsfoot, smooth-wheel, and rubber-tired varieties, vibrators, including plates and rollers, and impact rammers, generally of the internal-combustion type. Field tests made by the U. S. army engineers and the Road Research Laboratory of England show that the density of soil compacted in the field depends not only on the water content and nature of the soil material but also on the type of compaction equipment.