Search results for "Rubberised asphalt"

showing 3 items of 3 documents

Analytical approach for the mix design optimisation of bituminous mixtures with crumb rubber

2018

The present paper provides a basis for defining a mix design method specifically tailored to rubberised asphalt that takes into account the behaviour of crumb rubber. An analytical approach to quantifying the recovered deformation of crumb rubber in the post-compaction phase has been developed in order to adjust the number of gyrations proposed by the Superpave method for compacting specimens of hot mix asphalt using a Superpave gyratory compactor. The maximum allowable amount of rubber has been calculated. Finally, a step-by-step protocol has been proposed in order to fabricate and compact crumb rubber modified mixtures with the gyratory compactor.

Crumb rubber; Mix design; Rubberised asphalt; Superpave gyratory compactor; Civil and Structural Engineering; Building and Construction; Materials Science (all); Mechanics of MaterialsMaterials science0211 other engineering and technologies020101 civil engineeringMix design02 engineering and technologyMix designRubberised asphalt0201 civil engineeringNatural rubberAsphalt pavement021105 building & constructionSettore ICAR/04 - Strade Ferrovie Ed AeroportiGeneral Materials ScienceCrumb rubberComposite materialCivil and Structural EngineeringCrumb rubberBuilding and ConstructionStrength of materialsSuperpave gyratory compactorCrumb rubber Superpave gyratory compactor Mix design Rubberised asphaltAsphaltMechanics of Materialsvisual_artSolid mechanicsvisual_art.visual_art_mediumMaterials Science (all)Deformation (engineering)
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Mechanical characterisation and 3D fractional viscoelastic modelling of railway sub-ballast rubberised asphalt

Railway sub-ballast rubberised asphaltTemperature effect on viscoelastic materials3D factional viscoelasticity3D factional viscoelasticity; Railway sub-ballast rubberised asphalt; Temperature effect on viscoelastic materials
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Quality-control procedure for dry-process rubberised asphalt mastics

2019

Crumb Rubber (CR) can be incorporated into asphalt mixes via the dry process by directly adding CR into the mixer together with other asphalt mixture’s components, or with the wet process where the CR is used as a bitumen modifier. While the wet process allows an accurate monitoring of the interaction between CR and bitumen, the lack of control represents a main issue in the dry process. In fact, in the latter the CR particles keep swelling during hauling and possibly also after paving operations, often causing workability issues and premature failures. This study wants to provide a methodology that could help quality control procedures of bitumen/filler/rubber systems during mixing, haulin…

swelling proceasphalt mixtureMaterials sciencebusiness.industrymedia_common.quotation_subjectControl (management)pre-treatment of crumb rubberProcess (computing)Viscosity over timeQuality-controlrubberised asphalt masticdry-procereal-time viscosity measurementAsphaltSettore ICAR/04 - Strade Ferrovie Ed AeroportiQuality (business)Process engineeringbusinessCrumb Rubbermedia_common
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