However, the resulting blocks were only a few centimeters long. Now, they have taken this technology to the next level. "We can make calcium carbonate concrete bricks large and strong enough to ...

To make concrete, limestone, or calcium carbonate, is mixed with clay and other materials and then calcined at high temperatures, so CO2 is released via the thermal decomposition of calcium carbonate.

Lucobit (Wesseling, Germany; has developed compounds containing 80% calcium carbonate (CaCO₃). According to the company, the ...