Publications by André-Gilles Dumont

Asphalt Mixture with RAP: Mix Design Optimization

André-Gilles Dumont, Michel Pittet, Nicolas Bueche, Sara Bressi

The addition of reclaimed asphalt pavement (RAP) in hot mix asphalt is now common practice in Switzerland. With the increases of RAP content in asphalt mixture, the problematic of the mix design optimization becomes an important issue to be considered. The ...

Springer2016

A new laboratory methodology for optimization of mixture design of asphalt concrete containing reclaimed asphalt pavement material

André-Gilles Dumont, Sara Bressi, Manfred Partl

The reduction of virgin bitumen added to asphalt mixtures containing Reclaimed Asphalt Pavement (RAP) is based on the typical assumption that all the aged binder function in the same way as the virgin binder. However, recent studies conducted by the author ...

Springer Verlag2016

An advanced methodology for the mix design optimization of hot mix asphalt

André-Gilles Dumont, Sara Bressi, Manfred Partl

The bitumen quantity to add to asphalt mixtures depends on the surfaces of aggregates and filler to be coated. The formulas currently available in the literature have limitations such as considering all the fillers with the same specific surface or the agg ...

Elsevier Sci Ltd2016

A framework for characterizing RAP clustering in asphalt concrete mixtures

André-Gilles Dumont, Michel Pittet, Sara Bressi, Manfred Partl

Recycled Asphalt Pavement (RAP) is commonly used in asphalt for road rehabilitation or new constructions. Nevertheless, some physical and chemical phenomena that occur during production, laying and compaction of mixtures containing RAP are not yet complete ...

Elsevier Sci Ltd2016

Deriving a load model for the braking force on road bridges: Comparison between a deterministic and a probabilistic approach

André-Gilles Dumont, Glauco Feltrin, Marc-Antoine Fénart, Katrin Beyer

The current provisions for the braking force in the Eurocodes are much more demanding than previously enforced national codes from most European countries. Hence, safety assessments of existing bridges may show a lack of compliance with the new safety requ ...

Springer International Publishing2016

Cluster phenomenon and partial differential aging in RAP mixtures

André-Gilles Dumont, Michel Pittet, Sara Bressi

The present study defines a procedure for gaining a better understanding of the interaction between the aged and the virgin binders and what actually occurs during a mix process. Indeed, the authors propose a methodology to determine and quantify the clust ...

Elsevier Sci Ltd2015

Defining a braking probability to estimate extreme braking forces on road bridges

André-Gilles Dumont, Glauco Feltrin, Marc-Antoine Fénart, Katrin Beyer

A probabilistic approach is necessary to estimate the magnitude of the braking force that compares in terms of return period with the vertical traffic loads present in bridge design codes. A data set from a Danish Field Operational Test served as support t ...

2015

International Journal of Pavement Engineering

André-Gilles Dumont, Nicolas Bueche, Sara Bressi

This paper evaluates the variability of binder rheology for different ageing levels and the influence of ageing at different testing temperatures. Three different ageing levels were applied on a single type of bitumen with a penetration grade of 70/100.The ...

Taylor & Francis Ltd2015

Particle clustering phenomena in hot asphalt mixtures with high content of reclaimed asphalt pavements

André-Gilles Dumont, Sara Bressi, Manfred Partl

One challenge in efficient recycling of asphalt concrete is the adherence of the reclaimed asphalt pavement (RAP) particles or clustering that inhibits fulfilling the aggregate gradation requirements. In order to investigate this phenomenon two types of mi ...

Elsevier Sci Ltd2015

Dynamic Modeling Of Lane Distribution Impact In Complex Freeways

André-Gilles Dumont, Sofia Samoili, Nikolaos Geroliminis

Traffic dynamics have been the focal point of research aiming to provide a better understanding of traffic phenomena and to be integrated in traffic management for recurrent congestion. The aim of the study is to ameliorate complex highway and/or freeway n ...

2014

Effects of hard shoulder lanes configuration on driver’s behaviour

André-Gilles Dumont, Jade Chapoton

Nowadays, reassignments of hard shoulders into traffic lanes are spreading across Europe. This traffic management measure allows to respond to the growing saturation of high-capacity roads.In Switzerland, the first stretch to be equipped in such a way was ...

2014

Performance-orientierte Mischgutanforderungen

André-Gilles Dumont, Michel Pittet, Manfred Partl

Die Europaeischen Normen legen die Verfahren zur Charakterisierung der Steifigkeit und Ermuedung von Asphalt durch Biegepruefungen fest. Die Verfahren dienen zur Einstufung von Asphalt aufgrund seiner Steifigkeit und als Hinweis auf sein relatives leistung ...

2014

A Multi-Dimensional Analysis of Hard Shoulder Running Systems

André-Gilles Dumont, Sofia Samoili, Dimitrios Efthymiou

The use of Hard Shoulder Running (HSR) systems is a relatively recent control policy aiming to ameliorate traffic conditions in recurrent congested networks. This ITS strategy attracts researchers and practitioners interest, in an attempt to assess its imp ...

2014

Decision aid model for asphalt mixture choice

André-Gilles Dumont, Nicolas Bueche

Warm Mix Asphalt (WMA) represents widely used alternative to hot mix asphalt (HMA), this in order to decrease the energy consumption and environmental load. Numerous WMA products can be found and the choice of the most favourable mixture is not necessarily ...

2014

Dimensionnement des chaussées: état actuel et évolution

André-Gilles Dumont, Sara Bressi

Les chaussées sont soumises aux effets des charges et doivent s’adapter aux évolutions du nombre et des types de véhicules. Pour tenir compte du changement climatique constaté et des récents développements au niveau des matériaux de chaussées, nous devons ...

2014

Lane Flow Distribution Investigation of Hard Shoulder Running Freeways

André-Gilles Dumont, Sofia Samoili, Dimitrios Efthymiou

2013

Investigation of Lane Flow Distribution on Hard Shoulder Running Freeways

André-Gilles Dumont, Sofia Samoili, Dimitrios Efthymiou

Responding to an impending demand growth at an existing reactive managed lane system, and in order to provide a timely and more effective temporary hard shoulder activation, short-term prediction models are developed. A lane-oriented attribute, namely the ...

National Academy of Sciences2013

Dynamics of Lane Distribution Flows in Freeways

André-Gilles Dumont, Sofia Samoili, Nikolaos Geroliminis

Lane density and lane flow distribution are utilised in the current study as characteristics of traffic dynamics for control and planning purposes in freeways with ITS systems. As part of an on-going research, the Lane Flow Distribution Ratio (LFDR) and th ...

2013

Realistic laboratory curing of bituminous mixtures

André-Gilles Dumont, Michel Pittet, Marc-Antoine Fénart

In order to perform some specific testing, road laboratories apply a preliminary thermal treatment that impacts the asphalt mixture mechanical and intrinsic properties. The current standardisation in Switzerland and in Europe does not sufficiently describe ...

2013

Short-Term Lane Flow Distribution Forecasting in Hard Shoulder Running Freeways

André-Gilles Dumont, Sofia Samoili, Dimitrios Efthymiou

2013