Скачать с ютуб Investigation of Mechanical Properties of Used Rubber Tires as Under-Sleeper Pads in Railway Tracks в хорошем качестве

Investigation of Mechanical Properties of Used Rubber Tires as Under-Sleeper Pads in Railway Tracks

Morteza Esmaeili, Armin Shamohammadi, Farshad Astaraki, Majid Movahedi Rad and Jafar Chalabi presented "Laboratory Investigation of the Mechanical Properties of Used Rubber Tires as Under-Sleeper Pads in Railway Tracks" at the Canadian & Cold Regions Rail Research Conference 2021. The Proceedings for CCRC 2021 can be downloaded for free at https://doi.org/10.7939/r3-ez2j-pn73 Abstract: In railway tracks, using elastic elements is one of the most efficient methods for establishing and changing vertical stiffness, reducing noise and vibration, and consequently decreasing maintenance costs. In this regard, using under-sleeper pads made of Polyurethane, rubber, or Ethylene-vinyl is a practical element. These elements can be used under sleepers both in ballasted and ballastless tracks. Since waste rubber material has not yet been widely used in railway tracks and the availability of a considerable amount of them, examining them as under-sleeper pads is beneficial. Therefore, the current study investigates the applicability of used rubber tires material with different thicknesses of 7, 9, 11 and 13 mm as under-sleeper pads in tramway, metro, high speed, and main ballasted railway tracks. For this purpose, the static and dynamic stiffness’s of samples were assessed according to DIN 45673-6. Furthermore, the best performance of the produced pad appeared in a frequency range between 5 to 30 Hz, while its static and dynamic bedding modulus, Cstat and Cdyn ranges were between 0.042 to 0.14 and 0.1 to 0.18 N⁄〖mm〗^2 respectively. Speaker Bio: Armin Shamohammadi has a Master’s degree in Railway Engineering from the Iran University of Science and Technology. During his master’s thesis research, Armin investigated the effects of Under Sleeper Pads and Deconstructed Tier-Under Sleeper Pads on ballast degradation and settlement. Subsequently, he has accomplished large-scale civil–railroad and infrastructure projects such as rip raps, railway culverts, railway switches and crossings and ballast tamping for the Railways of Iran (RAI). This video is part of the Canadian & Cold Regions Rail Research Conference 2021, which took place virtually November 9-10, 2021. This video is not available for download or distribution without consent from the Canadian Rail Research Laboratory (CaRRL) or the University of Alberta Geotechnical Centre.