Operation Cmv - Fayat Group DYNAPAC CA4600 Instruction Manual

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Operation CMV

The Compaction Meter is measuring the dynamic
stiffness of the ground. The CMV is influenced by the
rolling speed, rolling direction (forward or reverse),
amplitude setting and vibration frequency. DCM is less
sensitive to small variation in vibration frequency.
Some reference CMV for some compacted materials:
Material Material
rock fill rock fill
gravel gravel
sand sand
silt silt
clay clay
The water content in the compacted soil, not rock fill,
has a large influence on stiffness, wet soil will result in
low CMV and dry soil will result in higher CMV.
When double-jump occur CMV will be reduced and
this lower CMV should not be used for determine if
compaction is ready or not.
NOTE: The operator shall always keep an eye on
where they are driving and not focus too much on the
CMV display, due to safety.
4812163801.pdf
Operation
CMV CMV
40 - 200 40 - 200
25 - 100 25 - 100
20 - 60 20 - 60
5 - 30 5 - 30
0 - 80 0 - 80
2019-04-30