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Sign upJanuary 1, 2016
HSG Foundation
Saint Gallen
The HSG Foundation, a non-profit dedicated to supporting the University of St. Gallen's growth as a leading international business university, incorporated Susteno cement in constructing its new learning center. For "the SQUARE," Sou Fujimoto Architects were commissioned for the design, while Holcim supplied Susteno 4 and other materials, including EvopactPLUS and EvopactZERO. The project utilized approximately 1,000 tons of Susteno cement.
The use of Holcim's advanced and innovative ECOPact+ and Susteno solutions for this project successfully achieved a significant 10% CO2 reduction compared to the use of optimized Swiss mass cement alternatives.
Susteno is the first resource-saving concrete in Switzerland made of high quality processed mixed rubble from demolition projects. 85% of demolition rubble is recycled in Switzerland, and Holcim found a way to close the material cycle for the remaining 15% that would otherwise be landfilled. This conserves scarce landfill space (around 1200 truck loads in 2020), conserves primary raw materials, and saves 10% CO2 compared to a CO2-optimised Swiss mass concrete (30% vs a type I concrete). The CO2 savings in 2020 were equivalent to 4700 people flying from Zurich to New York. Susteno is also a solution for companies that recycle concrete and mixed demolition waste and are looking for a sustainable alternative to landfilling the unusable fine fractions. Susteno is the next generation of mass concrets with a more ecological footprint and complies with all norms. This solution demonstrates how the construction sector can play a key role in the transition to a circular economy.
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