Improving the methods for express evaluation of the quality of a road bed’s soil compaction during construction of automobile roads

Abstract

The authors have implemented a review and analysis of instruments and equipment for express evaluation of elasticity modulus, California bearing ratio and soil hardness, measured by the depth of penetration of the dynamic penetrometers’ cone from a single impact. The analysis of the predecessors’ work will allow to develop mathematical models relating the coefficient of soil compaction with a coefficient of moisture when testing with various devices, installations of dynamic loading, dynamic cone penetrometers of Russian and foreign production, soil hardness gauge - GeoGauge. The authors describe the methodology of experimental studies, including laboratory works and full-scale testing. The use of research results will allow condense the grid of compaction ratio’s control, which will increase the reliability of tests and the homogeneity of compaction’s degree. This will increase the smoothness of surfaces and ensure the required level of consumer properties of an automobile road for a longer period of operation.

Keywords

• коэффициент уплотнения
• коэффициент увлажнения
• экспресс оценка степени уплотнения
• динамическмй пенетрометр
• установка динамического нагружения
• измеритель жесткости грунта