Devising a procedure for assessing the subgrade compaction degree based on the propagation rate of elastic waves

This paper reports the analysis of methods for estimating technical condition subgrade underneath a constructed railroad track or road during its operation. The study results have proven that issue related to monitoring and controlling high-quality compaction heterogeneous remains relevant requires construction reliable experimental assessing degree compaction. A procedure determining in laboratory has been devised, based on inertial microcomputer technologies, which makes it possible assess soils depending propagation rate an impact's elastic waves. An performed into waves across homogeneous made coarse-grained sand coarse with layer clay middle prism. established wave accepts lower value than subgrade. Through dynamic interpretation, by using discriminant statistical analysis, characteristic features defined distribution accelerations body subgrade, compaction, would make monitor state As soil affects roads