Compaction performance of vibratory and oscillatory rollers on poorly compacted soils

Abstract

Dynamic roller compaction has become the common method for near-surface compaction since it is significantly more efficient compared to static rollers. Furthermore, dynamically excited drums allow the use of Continuous Compaction Control (CCC) systems, which enable a reliable assessment of the state of soil compaction, based on an analysis of the motion behaviour of the dynamically excited drum interacting with the soil. The most popular dynamically excited drum in earthworks is the vibratory drum followed by the oscillatory drum. These two types of excitation do not only differ in their setting and modes of operation but also in their impact on the soil. The investigations performed in the scope of large-scale in situ tests were part of a research project of the German roller manufacturer HAMM AG in cooperation with TU Wien. The paper presents setup, procedure and results of the experimental field tests with the main target to outline the differences in compaction performance of vibratory and oscillatory rollers on poorly compacted soils.