Investigation of the correlation between California bearing ratio and shear strength of pavement subgrade material with different water contents

In this study, CBR and Shear Vane tests, which are common test methods used in determining the bearing capacity shear strength of highway pavement subgrade material, were applied effect changing water content on results was investigated. It is aimed to determine accuracy these expressions by obtaining parameters material with different contents from laboratory experiments comparing obtained empirical literature. values five samples prepared at 15%, 16%, 17%, 18%, 20% experimentally. The experimental calculated using correlations found literature compared. As a result vane test, recommended be preferred terms ease application, selected correlation relations calculated. By values, approximation accuracies existing presented it seen that possible find value maximum 90%. addition, study presents new gives relationship between data results. With equation created; After experimentally, could 96% accuracy.