1 Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania ''Luigi Vanvitelli", Caserta 81100, Italy. Electronic address: umberto.arena@unicampania.it.
2 Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, NC 27695-7908, USA.
3 European Commission, Joint Research Centre (JRC), Seville, Spain.
4 Institute of Sustainability in Civil Engineering, RWTH Aachen University, Germany.