Sebastian Villwock

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Ambient vibrations of dynamic rollers may limit their applicability in sensitive areas. In the presented study two different types of excitation for the dynamic roller drum are tested on their influence on ambient vibration, the oscillating and the vibrating drum. Two approaches for the assessment of the damage potential of dynamic roller compaction are(More)
CCC systems are the state of the art method for an assessment of the achieved compaction success with vibratory rollers. However, CCC systems were not available for oscillatory rollers, which differ from vibratory rollers not only in their construction, but also in their motion behaviour and way of dynamically loading the soil. Experimental field tests were(More)
Oscillatory soil compaction implies a complex soil-roller interaction. Notwithstanding its benefits (e.g. through the less harmful effects on the adjacent built environment) this type of soil compaction has been less investigated in the past, by comparison with other type of dynamic soil compaction, e.g. vibratory roller compaction. Thereby, the paper aims(More)
In the presented study two different types of excitation for the dynamic roller drum are compared in terms of their impact on soil, the vibratory drum and the oscillatory drum. Their differences in functioning, mode of operation and loading the soil are outlined. First results of large-scale in-situ tests are presented in which the vertical earth pressure,(More)
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