Evaluation of Pavement Base and Subgrade Material Properties and Test Procedures

摘要

The objective of this research was to develop simpler and less expensiveprocedures for characterizing the resilient properties, K1 to K3; the strength parameters, cohesion, C; and angle of internal friction, of base and subgrade materials. Researchers accomplished this by developing prediction equations which use easy to obtain soil properties and by evaluating a modified Texas triaxial test procedure which can be used to determine both the strength and resilient properties of pavement materials. The strength and resilient parameters obtained from the modified Texas triaxial test were compared to those obtained from the standard Texas triaxial test and the compressive creep and recovery test. Researchers document the results of these comparisons, as well as the development of the equations for predicting the strength and resilient parameters of base and subgrade materials, in this report.