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Free Content Acoustic performance of a noise barrier coated with an absorptive material

A noise barrier design of the absorptive type, incorporating LECA®, a well know material used in civil engineering because of its above-average sound absorption characteristics, as a coating material, is presented. The performance of the barrier was tested experimentally, using in situ measurements at Highway A2 in Portugal, and theoretically with MicroBruit a computer program for traffic noise prediction. In general, results indicate that absorptive noise barriers made from concrete and coated with LECA® yield results similar to those obtained with uncoated reflective barriers.

Keywords: 31.1; 35.4

Document Type: Research Article

Publication date: July 1, 2006

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