Making cement is one of the most energy-intensive industries, producing vast quantities of CO2 and other greenhouse gases from fossil fuels.
The relentless flood of concrete drowns more and more C02-absorbing vegetation all over the world, giving yet another boost to the cycle of global warming.
Eco-Cement, developed by Tec-Eco of Tasmania, Australia, is designed to save fossil fuels – and to absorb CO2. Based on reactive magnesium oxide, it needs CO2 to harden and set.
Better still, it can be combined with wastes such as fly ash from power stations and many types of slag which are too chemically reactive to be used with conventional cement to make concrete.