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S.R. Karumanchi, S. Lenart, Y. Ghafoori, D. Garcia Sanchez, "Rubber Modified Ballasted Track Systems for Low Noise and Low Vibration", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 13.7, 2024, doi:10.4203/ccc.7.13.7

Keywords: rubber, ballast, cyclic simple shear tests, geosynthetics, noise barriers, prototype testing.

Abstract

Ballasted railways are among the most commonly used forms of track infrastructure. However, their primary drawbacks include track stability issues due to ballast degradation over time, as well as increased noise levels and high maintenance costs. A novel low-noise and vibration railway ballast track design is needed to address these concerns. This paper presents an innovative solution developed within the European project LIAISON-HORIZON-CL5-2022-D6-02-06 framework that combines modified railway ballasted track systems with recycled tires, geosynthetics, low-height ballast walls, and noise barriers. The study investigates the use of recycled waste tire rubber chips to enhance shear modulus and mitigate vibrations within the ballast layer. Large-scale cyclic simple shear tests conducted on the rubber-mixed ballast material demonstrate improved shear modulus and damping ratio. Additionally, the paper briefly examines prototype testing and performance evaluations of the modified ballast wall arrangement in conjunction with geosynthetics. The inclusion of geosynthetic materials enhances lateral confinement by facilitating particle interlocking and providing better confinement through end-to-end connections with ballast walls.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 7 PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 13.7 Rubber Modified Ballasted Track Systems for Low Noise and Low Vibration S.R. Karumanchi¹, S. Lenart¹, Y. Ghafoori¹ and D. Garcia Sanchez² ¹Department of Geotechnics, Slovenian National Building and Civil Engineering Institute (ZAG), Ljubljana, Slovenia ²TECNALIA, Derio, Spain doi:10.4203/ccc.7.13.7 Full Bibliographic Reference for this paper S.R. Karumanchi, S. Lenart, Y. Ghafoori, D. Garcia Sanchez, "Rubber Modified Ballasted Track Systems for Low Noise and Low Vibration", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 13.7, 2024, doi:10.4203/ccc.7.13.7 Keywords: rubber, ballast, cyclic simple shear tests, geosynthetics, noise barriers, prototype testing. Abstract Ballasted railways are among the most commonly used forms of track infrastructure. However, their primary drawbacks include track stability issues due to ballast degradation over time, as well as increased noise levels and high maintenance costs. A novel low-noise and vibration railway ballast track design is needed to address these concerns. This paper presents an innovative solution developed within the European project LIAISON-HORIZON-CL5-2022-D6-02-06 framework that combines modified railway ballasted track systems with recycled tires, geosynthetics, low-height ballast walls, and noise barriers. The study investigates the use of recycled waste tire rubber chips to enhance shear modulus and mitigate vibrations within the ballast layer. Large-scale cyclic simple shear tests conducted on the rubber-mixed ballast material demonstrate improved shear modulus and damping ratio. Additionally, the paper briefly examines prototype testing and performance evaluations of the modified ballast wall arrangement in conjunction with geosynthetics. The inclusion of geosynthetic materials enhances lateral confinement by facilitating particle interlocking and providing better confinement through end-to-end connections with ballast walls. download the full-text of this paper (PDF, 8 pages, 780 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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