immo!nvest – Die Plattform für Standorte und Immobilien

Tag: Aluminium

  • Environmentally friendly innovation in the construction industry

    Environmentally friendly innovation in the construction industry

    Griesser is switching to even more sustainable aluminum. Previously, the internationally active developer of sun protection systems for buildings from Aadorf used aluminum that consisted of 64 percent primary raw material and 36 percent recycled aluminum, Griesser explains in a press release. Griesser now uses aluminum that consists of only 35 percent primary raw material. The remaining 65 percent is obtained from scrap or consumer scrap generated during the aluminum production process.

    “Our climate vision envisages complete decarbonization by 2050,” Griesser CEO Urs Neuhauser is quoted as saying in the press release. “In the material area of aluminum, we have the greatest leverage to significantly reduce our CO2 footprint.” The aluminum previously used by Griesser had a footprint of around 4.7 kilograms of CO2 emissions per kilogram of aluminum produced. Switching to the even more sustainable aluminum will reduce this figure by 30 percent to 3.3 kilograms of CO2 per kilogram of aluminum. The press release cites a European average of 6.7 kilograms and a global average of 16.7 kilograms as comparative values.

    Griesser is working with two European suppliers to reduce its footprint. They offer certified low-carbon aluminum. In addition to the use of recycled aluminum, the aluminum is produced in Europe using energy from renewable sources and modern technologies, explains Griesser. Compared to conventional production, the production process therefore has “up to five times” lower CO2 emissions.

  • Swiss premiere 100% recycled aluminium for Green Metro Campus

    Swiss premiere 100% recycled aluminium for Green Metro Campus

    This is the third project in Europe and a first for Switzerland. Green has teamed up with Implenia, Ernst Schweizer and Hydro Building Systems to implement this innovative solution. The use of recycled end-of-life aluminium leads to a significant reduction of the CO2 footprint by a factor of 40 and more than 167 tonnes of CO2 emissions are saved.

    The 100% recycled aluminium is used in the façade elements and reduces the CO2 footprint by a factor of 40 compared to primary aluminium, without compromising on quality. Roger Süess, CEO of Green, explains: “We are constantly exploring innovative ways to use new materials and are delighted that we have succeeded in doing so in collaboration with our partners.”

    Aluminium is considered a pioneering material for sustainable construction due to its strength, lightness and durability. It can be recycled almost indefinitely, using only 5% of the energy required to produce primary aluminium. Due to these excellent recycling properties, aluminium is already seen as an important part of a circular economy and its importance in the construction industry is expected to increase.

    The façade elements for the new office building will be manufactured by Ernst Schweizer AG, while the aluminium will be produced by the Norwegian Hydro Group. This is currently the only manufacturer that can produce high-quality 100% end-of-life aluminium without the addition of primary aluminium and with a near-zero CO2 footprint. Although recycled end-of-life aluminium is currently available in small quantities and is associated with higher costs, the four partners are setting an example by using this promising material in Switzerland for the first time.