Annually, large amounts of waste Polyethylene Terephthalate (PET) bottles are discarded worldwide, although their properties can be useful in engineering works, such as soil improvement. Thus, the influence PET fibers on sandy mechanical behavior was assessed present work. Consolidated-drained triaxial tests were performed using a 0.5% addition 1.4 (SF-1) and 3.3 dtex (SF-2). Afterward, plate l...

This paper describes triaxial compression tests conducted to determine the effect of fiber inclusion on stiffness and deformation characteristics of sand-gravel mixtures. Tested soil was a mixture of Babolsar sand from the shores of the Caspian Sea and Karaj River gravel. Portland cement was used as the cementing agent and fibers 12mm in length and 0.023mm in diameter at 0%, 0.5% and 1.0% were ...

Under traffic loading, the soil elements in subgrade are subjected to a complex 3D stress path. To investigate cyclic behavior of desert under initial shear conditions, number true triaxial tests were implemented on aeolian sand from Tengger Desert. A large range levels and different paths (various combinations major intermediate principal stresses) designed experiments. The results show that l...