In recent decades, awareness of environmental issues related to the construction industry has proven to be of great importance, particularly the impact of the use of concrete, which is the most popular material in this field thanks to its practicality, mechanical characteristics and cost. Concrete accounts for 8% of global greenhouse gas emissions. Looking at that from a different perspective, its share of pollution is four times greater than that of global aviation. Awareness of this negative characteristic of concrete has culminated in an environmental policy tool through which public administrations integrate ecological criteria into all stages of the procurement process, known as GPP (Green Public Procurement), which promotes minimum environmental criteria (MEC).