Aluminium noise barriers and added devices: a case study using the European standard for in-situ measurements

摘要

Traffic noise is one of the main environmental problems within Europe. Noise reducing devicesare the most used solution to noise abatement along roads and railways. In order to verify theacoustic performance in real life conditions and to control the long-term performance of thesedevices, the Working Group 6 of the Technical Committee 226 of the European Committee forStandardization developed the so called Adrienne method. This measurement method wasintroduced in 2003 with the technical specifications CEN/TS 1793-5 dealing with in-situ soundabsorption and sound insulation and with CEN/TS 1793-4 dealing with in-situ sound diffraction.The present paper describes an Austrian study, carried out in 2005 and 2006 by arsenal researchfor the company Forster Metallbau GmbH. The main focus of this work was the characterizationof new products concerning sound absorption and sound insulation using the Adrienne method.This research examines the acoustic behavior of aluminum cassettes, alternately equipped withreference barriers, partially non flat tilted elements, added devices on the top of the barrier,transparent insertions and digital prints on the barrier surface.