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Optimisation of bitumen emulsion properties for ballast stabilisation

Author(s):


Medium: journal article
Language(s): Spanish
Published in: Materiales de Construccion, , n. 80, v. 7
Page(s): 124
DOI: 10.3989/mc.2017.04416
Abstract:

Ballasted track, while providing economical and practical advantages, is associated with high costs and material consumption due to frequent maintenance. More sustainable alternatives to conventional ballasted trackbeds should therefore aim at extending its durability, particularly considering ongoing increases in traffic speed and loads. In this regard, the authors have investigated a solution consisting of bitumen stabilised ballast (BSB), designed to be used for new trackbeds as well as in reinforcing existing ones. This study presents the idea behind the technology and then focuses on a specific part of its development: the optimisation of bitumen emulsion properties and dosage in relation to ballast field conditions. Results showed that overall bitumen stabilisation improved ballast resistance to permanent deformation by enhancing stiffness and damping properties. Scenarios with higher dosage of bitumen emulsion, higher viscosity, quicker setting behaviour, and harder base bitumen seem to represent the most desirable conditions to achieve enhanced in-field performance.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.3989/mc.2017.04416.
  • About this
    data sheet
  • Reference-ID
    10516990
  • Published on:
    10/12/2020
  • Last updated on:
    19/02/2021
 
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