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Perspective view of road surface characteristics related res

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Tadas Andriejauskas

on 18 April 2016

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Transcript of Perspective view of road surface characteristics related res

Tadas Andriejauskas
Perspective view of road surface characteristics related research
Personal background
MSc Tadas Andriejauskas

Researcher at Road Research Institute of Vilnius Gediminas Technical University

Fields of work:
Road safety, ITS, Road surface characteristics

Contact details:
tadas.andriejauskas@vgtu.lt
29 September 2014, New Orleans
Outline
Background
Road surface characteristics
Research in the world
Research in Lithuania
Knowledge gaps
Benefits of road surface characteristics related research
Conclusions
Challenges
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
OR
Rolling resistance
Skid resistance
Tyre/road noise
Optimized road surface texture
...it requires
Roads for society and economy
Problems
Traffic accidents
High traffic noise
High air pollution
Scarce of natural resources (fuel consumption)
tadas.andriejauskas@vgtu.lt

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
Tyre/road noise influencing factors
Goals
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.
Rolling resistance
Projects
(e.g. MIRIAM, MIRAVEC, ROSANNE)
Skid resistance
International projects
(
e.g. HERMES, TYROSAFE
)
Devices
(e.g. SCRIM, GripTester, Pendulum SRT)
Measurement policies
Pavements
Tyre/road noise
Projects
(e.g. SILVIA, SILENCE, TYROSAFE)
Devices
(CPX, SPB, OBSI)
Development of noise reducing asphalt pavements in Lithuania
Skid resistance
Rolling resistance
Knowledge gaps
Conclusions
with
innovative, environment and user friendly road pavements
Pavements
Tyre characteristics
Road surface
characteristics
Environmental factors
Driving behaviour
Facts from Danish study
Devices
(RR trailer, Laboratory Drum)
Model and calculation methods
Pavements
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
Laboratory evaluation
Durability and climate resistance properties
Acoustical properties
Physical and mechanical properties
Research results
Next steps
Test road sections with noise reducing asphalt pavements
Further development of durability properties
Measurement of practical noise reduction in real traffic and road conditions
Cost-effectiveness calculations
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
HOW
to achieve this?
but..
RESEARCH
when..
..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
Asphalt mixtures
Full transcript