6533b831fe1ef96bd1299833
RESEARCH PRODUCT
Optimización de las propiedades de emulsión de betún para la estabilización de balasto
Giacomo D'angeloNick ThomD. Lo Prestisubject
BallastEngineeringCharacterizationPermeabilidad0211 other engineering and technologiesflowability02 engineering and technologyTrack (rail transport)CaracterizaciónPermeabilityDurabilityDeformación021105 building & constructionlcsh:TA401-492medicineÁridos; Caracterización; Permeabilidad; Deformación; DurabilidadGeneral Materials SciencecharacterizationProcess engineeringMaterials of engineering and construction. Mechanics of materials021101 geological & geomatics engineeringAggregateAggregate (composite)trackbed durabilityEconomies of agglomerationbusiness.industryrailway trackbeddeformationStiffnessBuilding and ConstructionStructural engineeringAggregate; Characterization; Permeability; Deformation; DurabilityDurabilityDeformationBitumen stabilised ballastaggregate13. Climate actionMechanics of MaterialsAsphaltViscosity (programming)TA401-492durabilitylcsh:Materials of engineering and construction. Mechanics of materialsmedicine.symptompermeabilitybitumen emulsionbusinessDurabilidadÁridosdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-01 |