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D. Kahagala Hewage, C. Camille, O. Mirza, F. Mashiri, T. Clarke, "Structural response of macro-synthetic fibre reinforced concrete sleeper under multiple impacts", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 20.3, 2022, doi:10.4203/ccc.1.20.3

Keywords: fibre reinforced concrete, railway sleeper, low-velocity impact, bending stiffness.

Abstract

A high-performance concrete sleeper with increased crack resistance and service life is in high demand in the railway industry. Macro-synthetic fibre reinforced concrete (MSFRC) sleepers are sought out of such alternatives due to their higher structural performance, corrosion and electrical resistance. Nevertheless, the knowledge on dynamic impact behaviour of MSFRC sleepers is limited, which impedes the service life predictions. Accordingly, the study herein presented evaluates the impact response of MSFRC sleepers experimentally. The sleepers were subjected to multiple impacts simulating the in-filed impact magnitudes corresponding to 3,10 and 2000 return year periods. The structural performance of the MSFRC sleepers was compared against the conventional pre-stressed (CPS) sleepers based on impact and reaction force, displacement and damage observed. Finally, the damage stiffness was evaluated analytically. The results concluded the beneficial adaptations of the MSFRC sleepers in the railway network due to their capacity to retain the integrity under ultimate impact loads. Correspondingly, higher service life can be expected from MSFRC sleepers than CPS sleepers.

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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: 1 PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 20.3 Structural response of macro-synthetic fibre reinforced concrete sleeper under multiple impacts D. Kahagala Hewage¹, C. Camille¹, O. Mirza¹, F. Mashiri¹ and T. Clarke² 1Western Sydney University, Penrith, New South Wales, Australia 2BarChip Australia Pty Ltd, Woolloongabba, doi:10.4203/ccc.1.20.3 Full Bibliographic Reference for this paper D. Kahagala Hewage, C. Camille, O. Mirza, F. Mashiri, T. Clarke, "Structural response of macro-synthetic fibre reinforced concrete sleeper under multiple impacts", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 20.3, 2022, doi:10.4203/ccc.1.20.3 Keywords: fibre reinforced concrete, railway sleeper, low-velocity impact, bending stiffness. Abstract A high-performance concrete sleeper with increased crack resistance and service life is in high demand in the railway industry. Macro-synthetic fibre reinforced concrete (MSFRC) sleepers are sought out of such alternatives due to their higher structural performance, corrosion and electrical resistance. Nevertheless, the knowledge on dynamic impact behaviour of MSFRC sleepers is limited, which impedes the service life predictions. Accordingly, the study herein presented evaluates the impact response of MSFRC sleepers experimentally. The sleepers were subjected to multiple impacts simulating the in-filed impact magnitudes corresponding to 3,10 and 2000 return year periods. The structural performance of the MSFRC sleepers was compared against the conventional pre-stressed (CPS) sleepers based on impact and reaction force, displacement and damage observed. Finally, the damage stiffness was evaluated analytically. The results concluded the beneficial adaptations of the MSFRC sleepers in the railway network due to their capacity to retain the integrity under ultimate impact loads. Correspondingly, higher service life can be expected from MSFRC sleepers than CPS sleepers. download the full-text of this paper (PDF, 7 pages, 565 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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