Surface Wave Testing To Investigate The Nature Of Roller Determined Soil Stiffness

Continuous compaction control (CCC) with instrumented vibratory roller compactors is an effective tool to estimate the relative soil stiffness over the complete area of a construction site.<br>However, research is still needed to extract roller measured stiffness values directly comparable with pavement design parameters and laboratory measurements. In this study we have used surface wave testing over a compacted subgrade along with CCC to study the influence depth of the roller measured stiffness value. Results show that shear wave velocity with depth profiles can be useful to study the influence depth of roller measured stiffness values.