SMET Natural Hydraulic Lime Brochure

The manufacture of natural hydraulic limes consumes less energy and produces less greenhouse gases than that of Portland cement per unit weight. Binders can be produced from limestone only by high-energy inputs. Significant efforts are being made by binder producers to reduce their energy consumption – and their carbon dioxide emissions – by switching from hydrocarbons to other fuels and by improving their production processes. The total energy content per tonne of lime-based mortar has the potential to be between 75 and 90% of that for cement-based mortars. Over a period of years of exposure to the atmosphere, lime-based mortars absorb most or all of the carbon dioxide that was driven off during their high temp manufacturing process – known as calcination. https://tinyurl.com/3nyh2fut