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Slope
In general, it should be noted that low-noise surfaces lose effectiveness on steeper gradients (>...
Tram tracks
When crossing tram tracks in a transverse direction, impulse noises may occur. However, crossing ...
Traffic light systems with detectors
If detectors for traffic light systems are embedded in the roadway and no level differences occur...
Pavement type transitions
The acoustical emission differences between low-noise and conventional surfaces can be up to 10 d...
Concrete elements on the roadway
Due to the high mechanical loads from braking and accelerating buses or from centrifugal forces i...
Acoustical evaluation
Acoustical evaluation forms the core of the performance monitoring of low-noise SDA surfaces. It ...
Recycling
The adjustment of the regulation on the avoidance and disposal of waste (VVEA; SR 814.600, 2015) ...
Grip
Grip is a safety-relevant success parameter and is measured during acceptance and periodic contro...
Surface properties
The surface of an SDA pavement affects driving comfort, safety, and noise development. Therefore,...
Constructed pavement
After installation, the finished layer will be checked for its density, layer thickness, and comp...
Asphalt mixture
The mixture forms the technical interface between the tested individual materials and the install...
Building materials
The quality of the building materials lays the foundation for a quality SDA surface. Even before ...
SDA with a cooling effect
With the progressing climate change, heat stress and the number of tropical nights in cities and ...
Ecological balance
In a life cycle assessment (Life Cycle Assessment, LCA), the individual processes of a product sy...
Acoustic maintenance
With a well-designed mixture and appropriate maintenance measures, the lifespan of SDA surfaces c...
Life cycle costs
The so-called life cycle costs (LCC) ideally encompass the entire life cycle of a structure, with...
Regular maintenance
Winter service When clearing snow, care must be taken not to damage the surface layers. For exam...
Placement
Studies show that the failure to achieve the required noise reduction with SDA pavements is often...
Mixture production
The production of SDA mixtures in the asphalt mixing plant (see figure) differs from conventional...
Acoustic optimization through mix design
Empirical data from practical experiences with SDA can be used to optimize the parameters of semi...