Road Performance Analysis of Different Solidified Silt Base Based on DCP

In order to analyze the road performance of asphalt emulsion, asphalt powder and inorganic compound type solidified silt base course, field dynamic cone penetrometer (DCP) tests of different structural layers were conducted based on the Yellow River alluvial plain rural highway project, and compared with 8% cement solidified silt base simultaneously. The results show that the penetration of asphalt emulsion, asphalt powder and inorganic composite solidified silt base is between 1.33 mm/blow and 1.74 mm/blow, less than 2.09 mm/blow of the penetration of cement stabilized silt structural layer, and the overall curing effect is better. There is a good correlation between DCP converted unconfined compressive strength and measured unconfined compressive strength of coring, DCP cumulative average penetration and FWD deflection of the three different solidified silts, layered calculation and cumulative calculation can be used for rapid evaluation of single-layer strength and overall bearing capacity respectively. The DCP test results can also provide data reference and engineering reference for the evaluation of improved and solidified road performance of silt in the alluvial plain of the Yellow River.