• at present, the data concerning the environmental impact of materials are almost totally lacking. Only few manufacturers in the cement and concrete field are beginning to provide the Environmental Product Declaration (EPD) according to ISO 14025:2010 (“Environmental labels and declarations - Type III environmental declarations - Principles and procedures”). In most of the cases, no data are provide on the manufacturing process, the energy used and the supply place of raw materials, thus making any evaluation (even qualitative) quite impossible.