Test Pit Evaluation of New Flexible Pavement Bases

摘要

Four Florida base materials tested and evaluated: Aripeka Limerock, Sand Clay Overburden, Shell Stabilizer, Graded Aggregate. FDOT laboratory identification, classification and Bearing Value Tests performed. FDOT Test Pit tests performed at selected moisture conditions: Plate test performed on sections: (1) At or near optimum, (2) Drained and dry, and (3) Soaked. Ratings were established using Laboratory Bearing Ratio and AASHTO-FDOT structural coefficients. Ratings also established for composite or equivalent base section plate modulus and AASHTO-FDOT Structural Coefficients. Repeated Stress and Cumulative Deformations were also used to rate the materials according to FDOT Group Rating. Observed Test Pit drainage was also used to subjectively rate the drainage.