International Reports
| Report No. | NN1 (jot this number down to order) |
| Title | A Noise-Absorbing Road Surface made of Poroelastic Asphaltic Concrete |
| Authors | Dr. ing. A. von Meier & Ir. J.C.P. Heerkens |
| Publisher | |
| Pub. Date | January, 1986 |
| Pages | 112 pages |
| Keywords | |
| Description | A new road-surface material, called poroelastic asphaltic concrete (PEAC), has been designed with a view to its acoustic properties. The aim was to achieve the greatest possible sound absorption in the frequency ranges that are most important as regards traffic noise as well as good civil engineering properties. The material is an open-textured asphalt mixture with a very high voids percentage made possible by the addition of rubberized bitumen as a binder. The rubberized bitumen contains finely ground old tyre tread. On a wearing course of 4 cm on a provincial road, with an average measured speed of about 80 km per hour, a noise reduction of about 3-5 dB was achieved relative to noise levels on dense asphaltic concrete. Besides reducing traffic noise at the source, the use of this material also contributes to improving road safety and to solving the problem of getting rid of old tyres. PEAC can be used on a large scale, employing technology already available in the road-building industry. |
| Postage | $ 8.00 : U.S. $ 8.20 : Canada/Mexico $ 8.40 : Rest of the World |
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