Creating the E-VIB value.

The interaction of the acceleration of the vibrating drum and the stiffness of the soil are used in E-VIB. In general, soil stiffness will increase along side compaction. If the soil becomes stiffer, the drum acceleration will also increase. The measuring sensors record the acceleration. This data is used to determine the effective contact force between the soil and drum and, at the same time, the vibration path of the drum. If the contact force is then laid on top of the vibration path of the drum, this results in a loading and unloading curve for every revolution of the exciter. The E-VIB value corresponds with the increase in load curve, as this correlates with the stiffness of the soil. The measuring principle corresponds with the static plate test.