Acoustique — Mesurage in situ des propriétés d'absorption acoustique des revêtements de chaussées — Partie 2: Méthode ponctuelle pour les surfaces réfléchissantes
Primary tabs
This document specifies a test method for measuring in situ the sound absorption coefficient of road surfaces for the one-third octave band frequencies ranging from 250 Hz to 1 600 Hz under normal incidence conditions. If necessary for practical applications the diameter of the tube can be reduced to 80 mm. This will increase the upper boundary of the frequency range to 2 000 Hz one-third octave band (see
5.4 ) but reduces the area under test.The test method is intended for the following applications:
—
determination of the sound absorption coefficient (and, if of interest, also the complex acoustical impedance) of semi-dense to dense road surfaces;
—
determination of the sound absorption properties of test tracks according to ISO 10844[
2 ] or other similar standards and test surfaces defined in national and international type approval regulations for road vehicles and their tyres;
—
verification of the compliance of the sound absorption coefficient of a road surface with design-specifications or other requirements.
LATEST NEWS
Water is essential to life. It is also vital to achieving more inclusive and sustainable development. That's why...
From 25 to 26 August 2022, ASN held a mission to popularize ISO standards in the field of on-site sanitation in Togo...
We are pleased to announce that the Director General of the Senegalese Association for...
The Senegalese Association for Standardization (ASN) celebrated on November 11, 2022 the World...
