Coordinatore | TECHNISCHE UNIVERSITEIT DELFT
Organization address
address: Stevinweg 1 contact info |
Nazionalità Coordinatore | Netherlands [NL] |
Totale costo | 4˙880˙918 € |
EC contributo | 3˙267˙000 € |
Programma | FP7-TRANSPORT
Specific Programme "Cooperation": Transport (including Aeronautics) |
Code Call | FP7-SST-2008-RTD-1 |
Funding Scheme | CP-FP |
Anno di inizio | 2009 |
Periodo (anno-mese-giorno) | 2009-11-01 - 2013-10-31 |
# | ||||
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1 |
TECHNISCHE UNIVERSITEIT DELFT
Organization address
address: Stevinweg 1 contact info |
NL (DELFT) | coordinator | 1˙007˙644.00 |
2 |
INSTITUT FRANCAIS DES SCIENCES ET TECHNOLOGIES DES TRANSPORTS, DE L'AMENAGEMENT ET DES RESEAUX
Organization address
address: CITE DESCARTES - BOULEVARD ISAAC NEWTON - CHAMPS SUR MARNE 14 -20 contact info |
FR (MARNE LA VALLEE) | participant | 898˙199.00 |
3 |
Ooms Nederland Holding BV
Organization address
address: Scharwoude 9 contact info |
NL (Avenhorn) | participant | 488˙163.00 |
4 |
GEOTECNIA Y CIMIENTOS S.A.
Organization address
address: CALLE LOS LLANOS DE JEREZ 10-12 contact info |
ES (MADRID) | participant | 305˙187.00 |
5 |
Aggregate Industries UK Limited
Organization address
address: "Bardon Hall, Copt Oak Road" contact info |
UK (Markfield) | participant | 301˙206.00 |
6 |
NATIONAL TECHNICAL UNIVERSITY OF ATHENS - NTUA
Organization address
address: HEROON POLYTECHNIOU 9 ZOGRAPHOU CAMPUS contact info |
EL (ATHINA) | participant | 266˙601.00 |
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'A good skid resistance of the pavement surface is of essence for road safety. Loss of skid resistance can have dramatic material and loss of life consequences. The problem is aggravated further in the presence of water, due to the phenomenon of hydroplaning. In this project the micro-mechanical factors controlling skid resistance at the tyre-pavement interface in asphalt concrete pavements shall be identified and related to asphalt mix characteristics on the basis of experimental evidence and computational studies. In the first phase of the project, the skid resistance characteristics of various combinations of dry pavement surfaces and tyre types shall be evaluated experimentally. The tests shall provide the information necessary for micro-mechanical finite element simulations of tyre-pavement interaction. A state of the art 3D rolling contact algorithm, accurate representation of the tyre characteristics and the surface morphology shall be utilised. On the basis of the simulations, the parameters controlling the magnitude and the degradation of skid resistance in dry pavements shall be identified. These parameters shall be used as input for wet pavement analyses in the second phase of the project in which focus shall be placed on the detrimental influence of water on skid resistance. The rolling contact algorithm shall be extended by a hydrodynamic component to enable simulation of hydroplaning. On the basis of these simulations, the influence of water on the parameters controlling the magnitude and the degradation of skid resistance in wet pavements shall be identified. In particular, the influence of progressive pavement surface unevenness shall be investigated. Design tools will be produced for the evaluation of the critical asphalt mix parameters on the dry and wet skid resistance degradation as a function of tire type and driving speed. These can be used by road authorities to decide for the choice of safe driving speed limits.'
Road slipperiness contributes to car accidents and fatalities. An EU initiative set out to design novel tools and techniques to measure and ultimately prevent the loss of skid resistance.
Water can have a major effect on road surface friction, and its impact on the traction produced by tyres can result in dangerous driving conditions. Existing methods and devices that measure the skid resistance of road surfaces are limited in scope and do not account for the different elements that influence tyre and road friction.
The EU-funded 'Enhanced driver safety due to improved skid resistance' (http://www.skidsafe.org (SKIDSAFE)) project looked at how the pavement and the tyre interact. This helped to create tools that predict the cumulative loss of skid resistance in relation to the wear of the pavement.
To explore the interaction between the pavement and the tyre, the project team designed and manufactured a device that carries out tests on different dry pavement surfaces and tyres. Advanced tyre models and algorithms were used to reproduce scenarios that help cause friction and wear between the surface and the tyre.
The simulations led to the identification of factors that influence the extent and the deterioration of skid resistance on dry pavements. These factors were then used to examine the negative impacts of wet pavements. A test vehicle was used to demonstrate skidding due to wet road surfaces.
Based on the findings, three pavement skid-resistance management tools were developed.
By introducing innovative pavement management solutions to measure the skid resistance of road surfaces, SKIDSAFE should reduce traffic accidents while helping authorities to determine safe speed limits.