Nowadays everybody knows how much the environmental degradation represents a problem caused by the global warming due to greenhouse gasses. The global average temperature is closely connected to the carbon dioxide: if emissions and concentrations in the atmosphere of CO2 increase, also the global average temperature does. The increasing of CO2 has characterized the entire XIX century and it is reaching higher and higher values. It is mainly due to fossil fuels and changes in the use of soils, but a great percentage, almost 6%, is also given by the production process of concrete which significantly contributes to the growth of greenhouse gases in the atmosphere.