Together with a team they developed a method to combine old concrete with carbon dioxide, taken from the air or industrial exhaust, to create a new, durable material called calcium carbonate concrete.

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.

While traditional cement production gets its necessary calcium carbonate from limestone that releases carbon dioxide when heated in a kiln, the U-M researchers can make the calcium carbonate ...

Three members of the Medusoil team - Vincent Laurençon, Dimitrios Terzis and Roberto Perez - at their production plant in ...

Two samples of calcium carbonate concrete, one using hardened cement paste (left) and the other using silica sand. Both raw materials are common construction and demolition waste products.

With cement significantly contributing to the embodied carbon from construction, new green cement solutions could enable companies to decrease their scope 3 CO2 emissions. In this Opinion piece, Eve ...

The architectural mortar samples were collected from the bordering concrete city wall (C). Large-area EDS mapping of a fracture surface (D) reveals the calcium-rich (red), aluminum-rich (blue ...

O’Mullane said the use of renewable energy to capture CO2 and create calcium carbonate may be needed in the cement industry, which is one of the tougher industries to decarbonize. “We envision ...

Eve Pope, Technology Analyst at IDTechEx When it comes to corporate sustainability and emissions reductions targets, scope 3 ...