Mechanical properties of macro-synthetic fibre reinforced concrete under static loading for railway transoms application

Most researches about railway bridges focus on the sleepers which are essential components within the track infrastructure. Indeed, most of these studies reveal that the existing sleepers made of either timber, steel or prestressed concrete are not entirely adequate for the modern railway operational conditions. Correspondingly, transoms (i.e. considered as large sleepers) used on railway bridges have higher design requirements as compared to traditional sleepers on ballasted track since they directly transfer the high static and dynamic loads from the rails to the bridge girders. These concerns related to the sleeper’s material have long been acknowledged by researchers, however their practical replacements with composite alternatives remain fairly limited. Therefore, this research addresses the use of Macro-Synthetic Fibre Reinforced Concrete (MSFRC) as an alternative and sustainable material for transoms in the field of railway bridges. Accordingly, the research presented herein will focus on the mechanical properties of macro-synthetic fibre reinforcement in concrete subjected to various static loadings. More emphasis has been given to the flexural and tensile strength characteristics since their associated stresses induced throughout the railway bridge ties (i.e. transoms) are comparatively higher. In addition, the effects of different fibre volume and aspect ratios will be thoroughly compared and discussed. The outcomes generated by the experimental tests are expected to enhance the durability, workability and flexibility of the concrete sleepers towards a more sustainable Australian railway track infrastructure.

• Authors:
  • Camille, C
  • Hewage, D K
  • Mirza, O
  • Mashiri, F
  • Kirkland, B
  • Clarke, T
• Conference:
  • Australian Small Bridges Conference, 9th, 2019, Surfers Paradise, Queensland, Australia
• Publication Date: 2019-4

Language

• English

Media Info

• Pagination: 8p
• Monograph Title: 9th Australian Small Bridges Conference, Surfers Paradise, Queensland, 1-2 April 2019

Subject/Index Terms

• TRT Terms: Bearing capacity; Railroad rails; Reinforced concrete; Static loads; Static penetration test
• Geographic Terms: Australia
• ATRI Terms: Bridge loads; Railway track; Reinforced concrete; Static loading

Filing Info

• Accession Number: 01714744
• Record Type: Publication
• Source Agency: ARRB Group Limited
• Files: ITRD, ATRI
• Created Date: Aug 26 2019 11:33AM