CMV - Compaction Meter Value is an accelerometer based system that provides an indication of material stiffness. The system is available on smooth drum vibratory soil compactors and tandem vibratory asphalt compactors. It measures only when the vibratory system is active, and provides a unitless value calculation derived from the recorded data that indicates composite stiffness.
For Soil Applications: For smooth drum compactors only. It is capable of measuring from 1 to 1.2 m ( 3.3 - 4 ft) deep depending on site conditions and is suitable for use on granular soils. Not recommended on cohesive soils.
For Asphalt Applications: Utilizes drum-mounted accelerometers to measure and record composite stiffness of the asphalt layer, base layer, and sub-base material.