Made from Ductal ultra-high-performance concrete, the custom-made lightweight spandrel panels on the Atrium, a commercial/retail building in Victoria, British Columbia, are only 3⁄4" thick.
Concrete is responsible for a huge proportion of global carbon dioxide emissions. A few companies want to reverse this cycle by sequestering carbon in building materials.
Fly ash lowers the environmental footprint of concrete and improves durability. Pouring and curing concrete with high levels of fly ash requires special treatment.
Portland cement takes a lot of heat for concrete’s carbon emissions, but water quality, land use, and transportation count too, especially because of aggregate.