Micro-macro modelling approach of vegetal wools thermal conductivity
4th International Conference on Bio-Based Building Materials, Barcelone, ESPAGNE, 16-/06/2021 - 18/06/2021
Micro-macro modelling approach of vegetal wools thermal conductivity
Biosourced materials such as vegetal wools offer major thermal insulation advantages in the green buildings field. Experimental characterisations of vegetal wools thermal conductivity as a function of their density show the existence of an optimum conduction-radiation coupled value. This specific point, as well as the properties of vegetal wools ar...
Multi-physical model for tyre-road contact - the effect of surface texture
The purpose of this paper is to develop a multi-physical tyre model, which can take into account the influence of temperature as well as the macro-texture of the road surface. The aim is to contribute to a better understanding and modeling of the tyre-road pavement interaction. This tyre-road interaction model can be used for friction estimation as...
Encouraging Results of International Friction Measurement Harmonization through Quality Assurance and Calibration
The friction measurement devices being used today in accordance with various international standards for the assessment of surface conditions on highways and runways are numerous. Although among the different equipment designs there are only a few substantially different measurement principles, they all have a significant number of design and opera...
Study of Influence of Operating Parameters on Braking Friction and Rolling Resistance
94th Transportation Research Board, TRB, WASHINGTON DC, ETATS-UNIS, 11-/01/2015 - 15/01/2015
Study of Influence of Operating Parameters on Braking Friction and Rolling Resistance
Mesure de la macrotexture des revêtements routiers à l’aide du Rugo 2 : bilan de dix années d’évolution
Le Rugo 2 est un appareil de mesure caractérisant la macrotexture d’une surface de chaussée (PMP) par une méthode profilométrique. Il a fortement évolué au cours des dix dernières années en intégrant d’une part des évolutions normatives (nouvel indicateur profondeur moyenne de profil (PMP) en lieu et place de la hauteur au sable calculée HSc) et d’...
Modeling the evolution of pavement surface characteristics
This paper aims firstly to study two main toll motorways surface characteristics: the macrotexture and the coefficient of transverse friction, secondly to model their evolution according to the traffic increase. It provides an accurate description of the decrease of the surface characteristics along the traffic by using robust linear regression mod...
Kinematic wave approach to model water depth on road surfaces during and after rainfall events
Water on road surfaces significantly degrades the available skid resistance. Indeed, 25% of injury accidents occur on wet roads in France due to lack of skid resistance. Some research results advocate an exponential decrease in skid resistance with increase in water depth. The above conclusions show the importance of knowing the water depth present...
Kinematic wave approach to model water depth on road surfaces during and after rainfall events
Water on road surfaces significantly degrades the available skid resistance. Indeed, 25% of injury accidents occur on wet roads in France due to lack of skid resistance. Some research results advocate an exponential decrease in skid resistance with increase in water depth. The above conclusions show the importance of knowing the water depth present...
