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Perspective view of road surface characteristics related res
Transcript of Perspective view of road surface characteristics related res
Perspective view of road surface characteristics related research
MSc Tadas Andriejauskas
Researcher at Road Research Institute of Vilnius Gediminas Technical University
Fields of work:
Road safety, ITS, Road surface characteristics
29 September 2014, New Orleans
Road surface characteristics
Research in the world
Research in Lithuania
Benefits of road surface characteristics related research
Why not to have more sustainable roads?
To ensure road safety
To reduce traffic noise
To reduce air pollution
To reduce fuel consumption
Next generation road infrastructure
Traditional, effective, but sometimes expensive ways
Optimized road surface texture
Roads for society and economy
High traffic noise
High air pollution
Scarce of natural resources (fuel consumption)
Driving speed, Acceleration, braking, maneuvers, Tyre load and pressure
Temperature, Moisture, Water, Wind, Dust, Winter maintenance
Number of tyres, Tyre dimensions, Tyre internal structure, Tyre inequality, Rubber hardness, Thread structure, Tyre age and wear, Tyre type, Re-treaded tyres, Studded tyres
Road surface texture and formation, Aggregate properties, Porosity, Pavement stiffness, Pavement colour, Age and deterioration, Microtexture, Roughness, Joints on bridges and concrete pavements
Tyre/road noise influencing factors
25 % of the CO2 emitted on the roads is caused by rolling resistance;
3-5 % on fuel consumption can be saved with low rolling resistance pavements;
Fuel savings money ≈ annual budget for maintenance and rehabilitation;
The investment in new low rolling resistance pavements will therefore be returned to the society through saved fuel and lesser CO2 emissions.
(e.g. MIRIAM, MIRAVEC, ROSANNE)
e.g. HERMES, TYROSAFE
(e.g. SCRIM, GripTester, Pendulum SRT)
(e.g. SILVIA, SILENCE, TYROSAFE)
(CPX, SPB, OBSI)
Development of noise reducing asphalt pavements in Lithuania
innovative, environment and user friendly road pavements
Facts from Danish study
(RR trailer, Laboratory Drum)
Model and calculation methods
Specific climate conditions in Lithuania (60-80 frost-thaw cycles annually).
Combination of optimized road surface texture and increased air void content also retaining sufficient stability and durability.
Concepts of noise reducing stone mastic asphalt (SMA 5 TM, SMA 8 TM) and asphalt concrete TMOA 5.
Conceptual asphalt mixtures
Durability and climate resistance properties
Physical and mechanical properties
Test road sections with noise reducing asphalt pavements
Further development of durability properties
Measurement of practical noise reduction in real traffic and road conditions
Significantly reduce environmental noise
Reduce fuel consumption
20% lowering transport GHGs by 2030 and 60% by 2050
Halving road fatalities by 2020 and Vision Zero by 2050
to achieve this?
..we will still need top class road infrastructure
Influencing factors and interdependencies;
Measurement methods, techniques and devices;
Calculation methods, laboratory simulation and prediction;
New types of optimized pavements.
Road surface characteristics for greener and safer road infrastructure.
KPIs for asset management system and more efficient road network management for NRAs.
Implementation of existing knowledge.
Rapid road surface characteristics related research progress in Lithuania.
Filling research gaps to move more forward.
Exchange of experience and cooperation in R&D activities between the countries.
10 different asphalt mixtures
3 different bitumen binder content