Asnake, Adamu (PhD)Zewdie, Moges2020-12-142023-11-042020-12-142023-11-042016-07http://etd.aau.edu.et/handle/123456789/24023In rail way industry, vibration and structure- born- noise emission due to wheel-rail interaction disturbs the surrounding environment and the rail track structures. One of the solution for these specific problems is using more resilient materials in track structures like rail pads, sleeper pads, sleeper boots or ballast mats, which can be produced using natural rubber and recycled end-of-life tyres. The core attention of this thesis is composing and producing railway track resilient materials from natural and recycled rubber. Track resilience pads are one of track structural components which isolate the steel rail from the concrete sleeper to protect the sleeper from damage. It has also vibration and load distribution effect due to its elasticity. The new composite material contains elastomers, fillers activators, accelerators, plasticizers, anti-oxidants and volcanizing agent. In order to achieve the standard quality of the resilient pads, more than 12 composites are prepared and basic rubber quality tests are carried out. The resilient material qualities are checked based on Australian, Chinese and Indian standards. Standard quality tests such as Shore A hardness, tensile strength, elongation, aging, wear resistance, stiffness and constant compression set tests are conducted. In addition, rhioline and viscosity tests are conducted to control the curing environment and the process ability of the resilient pad compound respectively. Once the required compound quality has achieved, by preparing steel rubber pad mold the final shape of a rail pad is produced using product curing machine. Finally, railway Slab Track Bridge is modeled and analyzed with and without sleeper pad using finite element package ABQUS to illustrate the application of sleeper resilient pads in reduction of the dynamic loading effect. The result shows application of resilient rail pads and sleeper pads together reduce the vibration and stress of the slab track.en-USResilient padRecycled (Reclaimed) rubberslab track-bridgeABAQUSModelingProductionThesis