Search results for "Hot mix asphalt"

showing 8 items of 8 documents

Energy and Environmental Life Cycle Assessment of asphalt pavements: A Scenario Analysis for Urban Roads

2018

This paper aims at calculating the life-cycle energy and the environmental impacts pertaining to roads management, including materials production, transportation, construction, maintenance, and rehabilitation. A life-cycle approach is applied to assess energy and environmental impacts of a typical Italian urban road, according to the ISO 14040 series. In more detail, the Authors assess the energy and environmental profile of different optimized scenarios of bituminous mixtures. The aim of scenario analysis is to identify the less impacting scenario from an energy and environmental point of view. For each analysed scenario, the contribution of each life-cycle step to the total impacts and th…

Energy Environmental Impacts Hot Mix Asphalt (HMA) Warm Mix Asphalt (WMA) Life Cycle Assessment Reclaimed Asphalt Pavement (RAP)
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Characterization of rubberized asphalt for railway sub-ballast. Improvements in the mix-design, performance features and rational methodology of HMA_…

2018

(STR) can be incorporated into asphalt mixtures in two different methods, which are referred to as the wet-dry process. The blending of recycled rubber (CRM) with asphalt has been used for years, and several manufacturing processes have been developed in Europe as well as in the USA. The use of a bituminous sub-ballast layer has been pointed out as an exciting alternative to the granular sub-ballast design traditionally applied in most railroad tracks. Frequently, unbound granular materials are replaced by bituminous sub-ballast that provide additional benefits to the subgrade protection. Much research has been conducted on finding other alternative material to be used as a modifier in asph…

MarshallPlusride-Generic mixtures.CompactionTraffic spectrumElasticityRailway Bituminous sub-ballast Granular sub-ballast Hot mix asphalt Superpave Crumb rubberESALRoadTemperature profileSettore ICAR/04 - Strade Ferrovie Ed AeroportiRUMACTensile strainFatigueSwelling and Rebounding effect
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Compaction of Open-Graded HMAs Evaluated by a Fuzzy Clustering Technique

2015

The aim of this paper is the proposal of an expeditious procedure to be used during the execution of an asphalt layer for improving the compaction task. This procedure, based on a fuzzy clustering technique, starts from the knowledge of some information recorded by ordinary measuring instruments and provides an aid to the decision-maker on the number of roller passes needed to achieve a specific density at a certain temperature. This result can be deduced with great rapidity during the paving operations on site without waiting for the time spent in the core extraction and in the subsequent laboratory analysis. In this way it is possible to identify more precisely which aspects of the execut…

Compaction Density Fuzzy C-means Hot mix asphaltFuzzy clusteringComputer scienceCompactionCompactionDensitycomputer.software_genreHot mix asphaltSpecific densityTask (project management)Asphalt pavementMeasuring instrumentSettore ICAR/04 - Strade Ferrovie Ed AeroportiData miningLayer (object-oriented design)Fuzzy C-meanscomputer
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CHARACTERIZATION OF RUBBERIZED ASPHALT FOR RAILWAY SUB-BALLASTS

Tesi di dottorato sotto la supervisione del professore Gaetano di Mino del Dipartimento di Ingegneria Civile di Palermo), come borsista Marie-Curie all'interno del progetto SUPRITN 2013/2017. Il mio lavoro e la linea della ricerca riguarda i conglomerati bituminosi con granulato di gomma per lo strato di sub-ballast nelle linee ferroviarie. L’attività di ricerca comprende il mix-design dell’asfalto con aggiunta di gomma, la caratterizzazione e le prestazioni per la ferrovia in termini di comportamento meccanico e lo smorzamento delle vibrazioni. In particolare con l’avvento dell’alta velocità, diversi studi hanno evidenziato ottime caratteristiche fisico-meccaniche per ciò che riguarda il c…

MarshallPlusride-Generic mixtures.ElasticitàCompactionSuperpaveMiscele ttoballasto bituminoseRigonfiamentoSub-ballastFerrovia; Approccio sperimentali; Sub-ballast; Miscele ttoballasto bituminose; Fenomeni vibrazionali; Mix-design volumetrico; Traffico ferroviario; Temperatura; Bitume; Superpave; Gomma riclicata; Simulazione Traffico; Profilo di temperatura; ESAL; Spettro di traffico; RUMAC; Marshall; Strade; Miscellazione-Compattazione; Elasticità; Sforzo di trazione; Fatica; Rigonfiamento; Miscele HMA; Plusride_Generic dry.ESALGomma riclicataMiscele HMATemperature profileSimulazione TrafficoSettore ICAR/04 - Strade Ferrovie Ed AeroportiRailway Bituminous sub-ballast Granular sub-ballast Hot mix asphalt Superpave Crumb rubber; Temperature profile; ESAL; Traffic spectrum; RUMAC; Marshall; Roads; Compaction; Elasticity; Tensile strain; Fatigue; Swelling and Rebounding effect; Plusride-Generic mixtures.Traffico ferroviarioMiscellazione-CompattazioneTensile strainFatigueSwelling and Rebounding effectFenomeni vibrazionaliFaticaSforzo di trazionePlusride_Generic dry.Traffic spectrumTemperaturaStradeElasticitySpettro di trafficoRailway Bituminous sub-ballast Granular sub-ballast Hot mix asphalt Superpave Crumb rubberApproccio sperimentaliRoadProfilo di temperaturaMix-design volumetricoRUMACFerroviaBitume
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Quantitative assessment of the parameters linked to the blending between reclaimed asphalt binder and recycling agent: A literature review

2020

Abstract The lack of understanding the mechanisms governing the interaction between reclaimed asphalt binder (RAb) 1 and recycling agents is one of the technical issues that still need to be resolved when high amount of reclaimed asphalt (RA) 2 is used in a new recycled asphalt mixture (RAM). Due to important role of RAb in that interaction and increased used of RA, it becomes necessary to have a way to classify RA, as any other material used in asphalt mixture production. It is very important to determine how much RAb is active by itself (DoA) 3 , but also to determine how much RAb can be considered available for a mix design of RAM (DoAv) 4 when a recycling agent is used. Finally, since t…

Computer science0211 other engineering and technologies020101 civil engineering02 engineering and technologyMix designReclaimed asphalt pavement12. Responsible consumption0201 civil engineeringAsphalt pavementWarm mix asphalt021105 building & constructionQuantitative assessmentDegree of binder activityGeneral Materials ScienceProcess engineeringDegree of binder availabilityDegree of blendingCivil and Structural EngineeringDegree of binder activity; Degree of binder availability; Degree of blending; Hot mix asphalt; Reclaimed asphalt pavement; Recycled asphalt mixture; Warm mix asphaltRecycled asphalt mixturebusiness.industryBuilding and ConstructionHot mix asphaltAsphaltbusiness
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A life cycle scenario analysis of different pavement technologies for urban roads.

2019

In the past, lowest price was the award criterion, given that structural capacity and safety were assured. In the last years, environmental, energy, and long-term impacts have been introduced (climate change, resource depletion, energy consumption, generated solid waste, discharged water, and emissions). Unfortunately, the introduction of new pavement technologies and materials (i.e., waste plastics) affects maintenance and rehabilitation processes and call for accurate and timeliness studies and criteria. Consequently, this paper presents an energy and environmental assessment of an Italian urban road and considers different material-related scenarios that fully comply with emerging techno…

Reclaimed asphalt pavement (RAP)Municipal solid wasteEnergyEnvironmental Engineering010504 meteorology & atmospheric sciencesEmerging technologiesEnergy consumption010501 environmental sciencesEnvironmental economicsResource depletion01 natural sciencesPollutionProduct (business)Environmental impactWarm mix asphalt (WMA)Life cycle assessmentEnvironmental scienceEnvironmental ChemistryEnvironmental impact assessmentScenario analysisLife-cycle assessmentHot mix asphalt (HMA)Waste Management and Disposal0105 earth and related environmental sciencesThe Science of the total environment
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Life cycle assessment of low temperature asphalt mixtures for road pavement surfaces: A comparative analysis

2018

The increasing fuel consumption demand, the accelerated pressure imposed by the depletion of 5 scarce raw materials and the urgent environmental protection requirements are forcing the change of 6 pavement industry and academia community’s research endeavors towards the development of low 7 emissions road paving technologies able to significantly reduce mixing and compaction temperature as 8 well as the consumption of virgin raw materials. One set of relatively recent technologies in the field of 9 pavement materials that aims at addressing those concerns are the warm mix asphalt (WMA). In fact, 10 they have the potential to allow the reduction of energy consumption and airborne emissions d…

Economics and Econometrics020209 energyContext (language use)02 engineering and technology010501 environmental sciencesRaw materialCYCLE DE VIE01 natural sciences7. Clean energyCivil engineeringChemical additives; Hot mix asphalt (HMA); Life cycle assessment (LCA); Reclaimed asphalt pavement (RAP); Sustainable pavement construction and management; Warm mix asphalt (WMA); Waste Management and Disposal; Economics and Econometrics12. Responsible consumptionWARM MIX ASPHALT (WMA)[SPI]Engineering Sciences [physics]RECYCLAGE DES MATERIAUX11. Sustainabilitychemical additive0202 electrical engineering electronic engineering information engineeringSettore ICAR/04 - Strade Ferrovie Ed AeroportiEnvironmental impact assessmentIMPACT ENVIRONNEMENTALLife-cycle assessmentWaste Management and Disposal0105 earth and related environmental sciencesCHEMICAL ADDITIVESsustainable pavement construction and management.Environmentally friendlyRECLAIMED ASPHALT PAVEMENT (RAP)LIFE CYCLE ASSESSMENT (LCA)13. Climate actionAsphaltWearing courseENROBEwar mix asphalt (WMA)Fuel efficiencyEnvironmental scienceHOT MIX ASPHALT (HMA)SUSTAINABLE PAVEMENT CONSTRUCTION AND MANAGEMENT
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Machine learning techniques to estimate the degree of binder activity of reclaimed asphalt pavement

2022

Part of this research was funded by the project RTI2018-096224-J-I00 that has been cofounded by the Spanish Ministry of Science and Innovation, inside the National Program for Fostering Excellence in Scientific and Technical Research, National Subprogram of Knowledge Generation, 2018 call, in the framework of the Spanish National Plan for Scientific and Technical Research and Innovation 2017-2020, and by the European Union, through the European Regional Development Fund, with the main objective of Promoting technological development, innovation and quality research. Part of this work was financially supported by the Italian Ministry of University and Research with the research Grant PRIN 20…

Intel·ligència artificial - Aplicacions a la medicinaArtificial neural networks:Natural Science Disciplines::Mathematics::Data Analysis [DISCIPLINES AND OCCUPATIONS]:disciplinas de las ciencias naturales::matemáticas::análisis de datos [DISCIPLINAS Y OCUPACIONES]Asphalt pavementsIndirect tensile strengthBuilding and ConstructionHot mix asphaltReclaimed asphalt pavementMechanics of Materials:Mathematical Concepts::Algorithms::Artificial Intelligence::Machine Learning [PHENOMENA AND PROCESSES]Machine learningAprenentatge automàticDegree of binder activity:conceptos matemáticos::algoritmos::inteligencia artificial::aprendizaje automático [FENÓMENOS Y PROCESOS]AsfaltSettore ICAR/04 - Strade Ferrovie Ed AeroportiRecyclingGeneral Materials Science:Enginyeria civil::Infraestructures i modelització dels transports::Transport per carretera [Àrees temàtiques de la UPC]Hot mix asphalt Recycling Reclaimed asphalt pavement Degree of binder activity Machine learning Artificial neural networks Random forest Indirect tensile strengthRandom forestCivil and Structural Engineering
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