: 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

D'Angelo, G., Lo Presti, D., Thom, N. (2017). Optimisation of bitumen emulsion properties for ballast stabilisation. MATERIALES DE CONSTRUCCIÓN, 67(327) [10.3989/mc.2017.04416].

Optimisation of bitumen emulsion properties for ballast stabilisation

Lo Presti, D.
;
2017-01-01

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
2017
D'Angelo, G., Lo Presti, D., Thom, N. (2017). Optimisation of bitumen emulsion properties for ballast stabilisation. MATERIALES DE CONSTRUCCIÓN, 67(327) [10.3989/mc.2017.04416].
File in questo prodotto:
File Dimensione Formato  
MC201707_e124a_R_EFMMMA.pdf

accesso aperto

Descrizione: ahead of print
Tipologia: Versione Editoriale
Dimensione 4.2 MB
Formato Adobe PDF
4.2 MB Adobe PDF Visualizza/Apri
2181-Article Text (mandatory)-5983-1-10-20170608.pdf

accesso aperto

Tipologia: Versione Editoriale
Dimensione 2.62 MB
Formato Adobe PDF
2.62 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/596715
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 23
  • ???jsp.display-item.citation.isi??? ND
social impact