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Problem
Cracks in the layer
(centre strip)
Cracks in the layer
(outer strip)
Layer composition is
not uniform
Marks in the surface
Screed does not
react to corrective
measures as
expected
D 42 48
Cause
- material temperature
- cold screed
- bottom plates are worn or warped
- wrong crowning
- material temperature
- screed extendable parts are incorrectly installed
- limit switch is not correctly set
- cold screed
- bottom plates are worn or warped
- paver finisher speed is too high
- material temperature
- change in the material temperature
- moisture on the foundation
- demixing
- wrong material composition
- incorrectly prepared foundation
- wrong layer height for maximum grain size
- long standstill times between loads
- vibration is too slow
- screed extendable parts are incorrectly installed
- cold screed
- bottom plates are worn or warped
- screed is not operated in the floating position
- paver finisher speed is too high
- auger is overloaded
- changing material pressure against the screed
- truck hits too much against the finisher while aligning
to the finisher
- too much play in the mechanical screed link/suspension
- truck brake is applied
- vibration is too high while standing on a spot
- material temperature
- change in the material temperature
- wrong layer height for maximum grain size
- incorrect installation of the grade control
- vibration is too slow
- screed is not operated in the floating position
- too much play in the mechanical screed link
- paver finisher speed is too high
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