Environmental performance of recycled rubber as drainage layer in extensive green roofs. A comparative Life Cycle Assessment

摘要: Using recycled rubber crumbs as drainage layer in extensive green roofs have high potential to reduce the heating and cooling loads buildings over traditional materials used layer, such as pozzolana gravel. However, the environmental impact due life cycle should be analyzed assess its benefit. This paper evaluates performance of which the is made crumbs, a material use which still experimental for this purpose. In this Life Cycle Assessment (LCA) applied compare impact of four constructive systems, two without insulation with different drainage materials, e material, conventional one, pozzolana gravel -, in front flat roofs, thermal (polyurethane), built an experimental set-up consisting monitored house-like cubicles, located Mediterranean continental climate (Lleida, Spain). The LCA considered production, construction, operational, disposal phases according UNE-EN 15643-2. operational phase was carried out using data measured set-up, considering heating energy consumptions the winter summer period, respectively.