Acoustic Absorption of Vertical Gardens

Abstract

Vertical gardens, called "Greenery Systems", are a new tendency in modern constructions. They are applied increasingly more frequently on those buildings where energy and ecological considerations, environmentally friendly, are a priority. Some main features of these technologies are: thermal insulation improvement, environmental pollution filtering, acoustic absorption, water retention and a friendly aesthetic appearance. Vertical gardens can have dissimilar acoustic features because they depend on the kind of support, substrate and vegetation used. For this reason, nowadays, collected data are very diverse and incomplete and it is necessary to expand the data available to provide more alternatives with practical application. In this work, acoustic absorption of modular vertical greening was studied. Each module was developed with a rigid PVC base covered with fibrous material forming pockets, where the substrate and vegetation were placed. The plant species that were used are some of the most widespread ones in the region, in order to achieve a good adaptation and simple maintenance.