The 2022 Obel Award goes to Seratech’s carbon-neutral composite cement
urban concept . ‘Architecture needn’t just be architecture. Architecture is also an activity of the mind,’ adds Eis Eriksen.
An architectural brick made of Seratech’s carbon-neutral composite cement. Bricks such as this one were used to create a ‘Crinkle Crankle Concrete’ wall for the 2022This year, the jury’s award focused on reducing embodied carbon emissions in the built environment sector, which is responsible for almost half of global CO2 emissions every year.
‘The beauty of the idea is that you can just use it as normal concrete,’ says Shanks. ‘There are other carbon-neutral materials, but they can be limiting because they can only be precast, cured in a lab in special conditions and shipped elsewhere. We want people to retain the freedom to use concrete the way that they are used to. We don’t want to limit people in any way because we’ll just lessen the amount of impact we can have.
The Seratech process also produces silica, which can be used as a supplementary cementitious material in concrete, reducing the amount of Portland cement in the concrete by up to 40 per cent. ‘This is evolution, not revolution,’ says Draper, who has a background in structural engineering. ‘People have done similar things before.’ For example, chemically, the mix is similar to fly ash concrete, a product that already exists on the market.
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