Jorge de Brito is a full professor of civil engineering in the Department of Civil Engineering, Architecture and Georesources, Instituto Superior Técnico, University ofLisbon. His main research topic is sustainable construction, particularly on the use of recycled aggregates in concrete and mortars. He has participated in 20 competitively financed research projects (four as the principal investigator) and supervised 20 PhD and 150 MSc theses. He is the author of 3 previous books, 20 book chapters, 250 journal and 450 conference papers. He is the editor-in-chief of the Journal of Building Engineering, an associate editor of the European Journal of Environmental and Civil Engineering, a member of the editorial boards of 15 other international journals and a member of the CIB, FIB, RILEM, IABMAS and IABSE organisations. Francisco Agrela is a Full Professor of Civil and Agricultural Engineering at the University of Cordoba, Spain, where he also obtained his PhD in 2003. He is a prolific author of research papers, book chapters, and conferences proceedings. In the last ten years, he has participated as Principal Investigator in more than 40 R+D+i projects related to real-scale applications of waste management and recycled materials. He collaborates with several Elsevier journals as a reviewer, notably Construction and Building Materials, Waste Management, Materials and Design, Resources, Conservation and Recycling, etc., and he is also on the Editorial Board of Materials (MDPI).