ABSTRACT

In the current research, effort has been made to gain a deeper understanding regarding the parameters affecting the dynamic behaviour of a sandy soil reinforced by Waste Tire Textile Fibres (WTTFs) that are produced during the recycling process of the End of Life Tires (ELTs). Such parameters as loading duration, rest time, and aspect ratio of fibres have been investigated by cyclic triaxial tests considering 3 different confining pressures and 21 different Cyclic Stress Ratio (CSR) levels. It is concluded that the aspect ratio of the fibres is a more prominent parameter than loading state and fibres with an optimum aspect ratio of 37.5 can improve the dynamic characteristics of the soil reinforced by WTTFs. Generally, the influences of fibre aspect ratio and loading characteristics on resilient modulus, damping ratio and phase angle of the reinforced specimens are diminished as CSR increases, while the permanent strain and energy absorption capability are directly related to the CSR.

摘要

在目前的研究中，已经努力深入了解影响报废轮胎（ELTs）回收过程中产生的废轮胎纺织纤维（WTTFs）增强沙土动态行为的参数. 考虑到 3 个不同的围压和 21 个不同的循环应力比 (CSR) 水平，通过循环三轴试验研究了纤维的加载持续时间、静止时间和长宽比等参数。得出的结论是，纤维的纵横比是比加载状态更突出的参数，最佳纵横比为 37.5 的纤维可以改善 WTTF 加筋土的动力特性。一般来说，纤维纵横比和负载特性对弹性模量的影响，