Controlled diesel-mixed soils for roadway embankments: laboratory and ultrasonic characterization

Abstract Soils contaminated with hydrocarbons is a repetitive site condition that may occur at locations adjacent to underground fuel tanks and other facilities. The main purpose of this study characterize assess possibilities reusing soil in useful applications such as roadway embankments. Accordingly, controlled amounts diesel were mixed clays sands using percentages ranging from 0 13.5%. Unconfined compression, direct shear, California bearing ratio, tests conducted on the diesel-mixed soil, along ultrasonic test. test provided measures for pulse wave velocity received frequency, which was correlated parameters elastic modulus, resilient ratio. From outcomes, it found small can help improved shear strength. For instance, adding 5% increased cohesion by 63% unconfined compressive strength 0.14 0.21 N/mm 2 . In sands, ratio almost double diesel, essential embankments especially remote locations. Damping coefficient determined different levels decay envelops. waves analyzed fast Fourier transform determine correlations between frequency content starting 13.5%, realized an uncomplicated be acceptably used static dynamic properties clean well soils.