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D. Ionescu, D.T. Fedele, M.R. Trounce, J. Petrolito, "Deformation and Degradation Characteristics of Sand-Contaminated Railway Ballast", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 26, 2016. doi:10.4203/ccp.110.26

Keywords: deformation, degradation, laboratory testing, railway ballast, sand fouling, settlement.

Summary

This paper presents the results of sinusoidal cyclic loading performed on sand-fouled railway ballast in a large-scale box test apparatus. The apparatus allows the modelling of typical traffic loading cases and in-situ conditions of a full-scale ballast section. The equipment measured the applied load, deformation and the pressure variation with depth. The results indicate that permanent deformation, degradation and pressure distribution are a function of the number of cycles of traffic loading. It was found that sand contamination increased ballast stiffness and decreased the elastic response, increasing stress on the superstructure elements. These effects reduce the life of superstructure elements and therefore can significantly increase maintenance demands.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 110 PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 26 Deformation and Degradation Characteristics of Sand-Contaminated Railway Ballast D. Ionescu, D.T. Fedele, M.R. Trounce and J. Petrolito Department of Engineering, La Trobe University, Bendigo, Australia doi:10.4203/ccp.110.26 purchase the full-text of this paper Full Bibliographic Reference for this paper D. Ionescu, D.T. Fedele, M.R. Trounce, J. Petrolito, "Deformation and Degradation Characteristics of Sand-Contaminated Railway Ballast", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 26, 2016. doi:10.4203/ccp.110.26 Keywords: deformation, degradation, laboratory testing, railway ballast, sand fouling, settlement. Summary This paper presents the results of sinusoidal cyclic loading performed on sand-fouled railway ballast in a large-scale box test apparatus. The apparatus allows the modelling of typical traffic loading cases and in-situ conditions of a full-scale ballast section. The equipment measured the applied load, deformation and the pressure variation with depth. The results indicate that permanent deformation, degradation and pressure distribution are a function of the number of cycles of traffic loading. It was found that sand contamination increased ballast stiffness and decreased the elastic response, increasing stress on the superstructure elements. These effects reduce the life of superstructure elements and therefore can significantly increase maintenance demands. purchase the full-text of this paper (price £22) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £85 +P&P)
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