ACOUSTIC EVALUATION OF A NEW MODULAR SYSTEM FOR GREEN ROOFS AND GREEN WALLS

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Architecture, Civil Engineering, Environment

Silesian University of Technology

Subject: Architecture , Civil Engineering , Engineering, Environmental

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VOLUME 10 , ISSUE 2 (June 2017) > List of articles

ACOUSTIC EVALUATION OF A NEW MODULAR SYSTEM FOR GREEN ROOFS AND GREEN WALLS

Maria MANSO / Maria MANSO / João Paulo CASTRO-GOMES / Michal MARCHACZ / Marcin GÓRSKI / Leszek DULAK / Rafał ZUCHOWSKI

Keywords : Green roofs, Green walls, Modular system, Sound absorption coefficient

Citation Information : Architecture, Civil Engineering, Environment. VOLUME 10 , ISSUE 2 , ISSN (Online) , DOI: 10.21307/acee-2017-023, June 2017 © 2017.

License : (BY-NC-ND 4.0)

Received Date : 02-March-2017 / Accepted: 08-May-2017 / Published Online: 28-August-2018

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ABSTRACT

Environmental noise is a major problem that affects citizen’s health and comfort mainly in densely populated urban areas. There are some ways to reduce environmental noise pollution through the use of materials with good acoustic insulation properties in buildings envelope. Recent studies have shown that green surfaces, e.g. in the form of green roofs and green walls, can contribute to decrease noise levels. The aim of this research is to identify how factors such as substrate and plants, variety and height of plants, affect the sound absorption of a modular system for green surfaces in simulated conditions. The results show that introduction substrate (S2) can improve the weighted sound absorption coefficient in 15% and the addition of plants (S3) improves it 20% more. However, if a variety of smaller and higher plants is used (S4) the weighted sound absorption coefficient (αw) can reach to 0.80 and an absorption class B can be obtained.

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