Japan's Taisei to make concrete with CO2-infused blast furnace slag from steel production - C2V - CO2 to Value In fact - CLIMAX
Taisei aims to commercialize concrete made with CO2-infused calcium and blast furnace slag, a byproduct from steel production, by around 2030. The process eliminates the use of cement, the production of which results in a large proportion of CO2 emissions from the concrete making sector.
Using a large quantity of calcium carbonate, a compound resulting from the reaction of calcium with CO2 and commonly found in a form of limestone and marble, affects concrete's rigidity, but Taisei says it can overcome the problem by mixing it with the blast furnace slag. The process does not require any special facility and the resulting concrete offers the same level of workability as the conventional type, Taisei said.