LOAD VERSUS SETTLEMENT BEHAVIOR OF SOFT CLAY REINFORCED WITH CEMENT STABILIZED RECYCLED ASPHALT PAVEMENT-LATERITIC SOIL COLUMN

In this paper, the performance of cement stabilized recycled asphalt pavement (RAP)-lateritic soil column inclusion in soft clay was investigated via a physical model. The load -settlement response and bearing capacity of the composite ground were studied at various cement contents (0%, 1%, and 3%) and at a 30% RAP replacement ratio. The soft clay was consolidated in the PVC mold with a diameter of 150 mm and 300 mm high, while the stabilized RAP-lateritic soil column with a diameter of 50 mm was used as a column at the center of the soft clay. The results showed that the bearing capacity of the composite ground significantly increased with the increased shear strength of the column. The purposed bearing capacity equation derived from the unconfined compressive strength of the column and the undrained shear strength of soft clay was found to predict the bearing capacity of the composite ground satisfactorily.