End User Requirements
GREEN INSTRUCT PANEL – OVERVIEW AND ADVANCEMENT
Green Instruct Panel (GI) consists in two layers, internal and external, assembled as a modular unit, suitable as buildings envelope, both for retrofitting and new construction.
GI internal layer provides excellent thermal and acoustic insulation and indoor air quality cleaning. GI external geopolymeric layer is the substrate for a vertical green wall. The two elements are separated by a strategically designed air gap and held together by an aluminium frame, working as a structural backbone.
GI - EXTERNAL LAYER
The external layer i.e. green wall is a living wall consisting in small plants with good root growth, perennial herbaceous and non woody-species, chosen according to climatic conditions and sun exposure.
No earth layer is foreseen, just a substrate made of perlite or zeolithe. Plant roots shall grow in channels, foreseen within the extruded geopolymer. These channels shall be used also for irrigation, together with a water diversion gutter in the top. Water will be injected at the top of the panel and collected at the bottom. Roots shall provide cleaning of greywater typical pollution, whenever it is used for irrigation by means of a recirculating system.
GI - INTERMEDIATE GAP LAYER
Air gap between external and internal layers of the panel is for thermal and acoustic insulation. Air gap allows ventilation avoiding humidity and mould growth problems and it is also an advantage for modular installation of the panels.
GI - INTERNAL LAYER
Magnesium Oxide Cement (MOC) panel works like window glazing and it’s able to take horizontal loads.
Internal layer shall have varying thickness in order to fulfil different thermal and acoustic insulation requirements.
Internal layer should be confined by a steel or aluminium frame or by an interlocking system able to accommodate additional elements capable to increase the overall stiffness of the panels.
Main GI advantages compared to green wall technology state of art:
- High quality prefabricates, containing more than 70% per weight of recycled material from construction and demolition wastes (C&D W);
- Production process optimized, for energy and resource efficiency, using extrusion, which enables flexibility in fast fabrication, low porosity, enhanced mechanical properties and shortening of curing time for cement-based products;
- Modularity of the product, 30% lighter than conventional envelope walls of the same size, 15÷30% faster to install and at the same time easy to maintain and dismantle at the end of life;
- Applicability of the product to both new and existing buildings;
- CO2 capture also during the lifetime of the plants, in the green wall external layer;
- Aesthetic added value;
- Cost effective technology with a potential price less than 500 €/m2;
- Greywater cleaning integrated at the building;
- Positive acoustic effects (noise absorption);
- Additional insulation for the building;
- Integration of services like air and water cleaning into the building;
- Indoor functioning photocatalytic coating;
- Positive microclimatic effects and increased biodiversity on-site.