Ecologically sustainable acoustic barriers.

Author(s)
Krezel, Z.A. & McManus, K.
Year
Abstract

This paper reports on the progress of the development of recycled aggregate concrete (RA concrete) that is used in the production of a noise barrier for urban freeways. The following aspects of the development are covered: inherent strength and porosity of the recycled concrete aggregate (RC aggregate), the use of the aggregate in new RA concrete and an acoustic performance of the noise barriers made from this aggregate. The barrier under development utilises the porosity of the aggregate, which is further enhanced to produce a barrier, which absorbs sound energy in specific wavebands. Preliminary results based on laboratory scale prototype indicate sound absorption of up to 50 percent of incident sound waves striking the barrier in the low frequency band characteristic of traffic noise. (a)

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Publication

Library number
C 21342 (In: C 21298 CD-ROM) /15 / ITRD E204217
Source

In: Managing your transport assets : proceedings of the 20th ARRB Conference, Melbourne, Australia, 19-21 March 2001, 11 p.

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This publication is one of our other publications, and part of our extensive collection of road safety literature, that also includes the SWOV publications.