Roumiana Zaharieva, Associated Professor, Head of Department “Building Materaials and Insulations” at University of Architecture, Civil Engineering and Geodesy (UACEG), Sofia Bulgaria. Roumiana Zaharieva has a Master degree in Structural Engineering (1989) from UACEG. Her PhD degree is in Civil Engineering from Artois University, France (1998). She was a researcher at Bulgarian academy of sciences (1991-2000). Since 2000 she is а lecturer at UACEG. The main professional experience of Dr Zaharieva is related to ensuring appropriate and sustainable use of materials in construction, considering all technical aspects of this matter – teaching and training, research and development, laboratory and in-situ testing, evaluation, expertise and consultancy. Her scientific interests include sustainable construction and waste recovery. She has a patent authorship, over 120 scientific publications and over 350 citations. Dr Zaharieva is qualified in various activities on construction and demolition waste (CDW) management: Development and implementation of national legislation; Training of professionals; CDW management plans; Reuse and acceptance criteria for secondary products. She was a leader of several projects on the development of innovative materials with recycled content. Currently she leads a team within a project for establishment of a Centre of competencies „Clean technologies for sustainable environment – water, waste, energy for circular economy“.