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Citation Information : Architecture, Civil Engineering, Environment. Volume 10, Issue 2, Pages 99-108, DOI: https://doi.org/10.21307/acee-2017-023
License : (BY-NC-ND 4.0)
Received Date : 02-March-2017 / Accepted: 08-May-2017 / Published Online: 28-August-2018
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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