DURAWHISPER
Reducing Road Noise with Recycled Rubber
Durawhisper™ hot mix asphalt uses crumb rubber to modify the asphalt cement binder to provide a thin asphalt overlay specifically designed to reduce noise.
Durawhisper™ consists of a 10 mm nominal size, dense-graded asphalt mixture designed with 2 to 4 percent air voids.
The aggregate particle shape and the design of the stone skeleton provide excellent rutting resistance and vehicular traffic noise-reducing characteristics. Crumb rubber, which is added to the asphalt mix, is beneficial for improved durability and long-term performance, particularly when subject to heavy, slow-moving traffic.
The combination of the crumb rubber additive and the use of a polymer-modified binder provides increased resistance to reflective cracking initiated when paving overlays to existing concrete slabs.
Its traffic noise-reducing properties make Durawhisper ideal for surfacing in and around subdivisions and general residential areas.
Technical Benefits of Durawhisper™
- Reduces tire noise
- Provides improved resistance to surface-initiated cracking and improved resistance to fatigue and reflection cracking
- Improves rutting resistance
- Results in reduced life-cycle costing and lower pavement maintenance costs
