The ordinary Portland cement (PC) production contributes 2–3% of global energy use and 8% to 10% of world-wide carbon dioxide emissions (CO2). According to estimates in 2050, the CO2 emissions associated with the manufacture of PC, could increase between 240–260% compared to the 1990 emissions. Faced with this need, the Portland cement industry has been considering several options.
Carbonation Results in Diverse Cement Pastes with 10% Substitution of Binder by Bentonite
The greenhouse effect is accelerating to reduce environmental footprint of concrete. In addition to the traditional mineral additions which are blast furnace slags, pozzolans and fly ashes, worldwide are tested new products in order to have a wider variety of substances capable of maintaining the performance and good durability of the concrete.