A review on current situation and challenges of construction and demolition waste management

Construction and demolition activities and natural disasters generate vast quantities of waste materials. Globally, it is estimated that about 35% of the quantities of construction and demolition waste (CDW) produced are directed to landfills, without any further treatment, although efforts to recycle and reuse CDWare increasingly being made. This paper, through a review of recent literature, focuses on the factors, barriers and motivations that influence the generation and management of CDW. Based on the analysis, two indicators are calculated for selected countries using the latest available data and an explanatory model is developed with a view to enabling identification of the factors affecting CDW generation. Most importantly, a concept map is created involving thirty-six different nodes that represents existing knowledge with respect to the components of the CDW system, and the positive or negative relationships between them.