Bibliometric analysis of construction and demolition waste recycling and utilization: review and prospect

With the continuous advancement of urbanization, a large amount of construction and demolition waste (CDW) is generated in large-scaled construction activities, which has aggravated the problems of environmental pollution, resources waste and ecological damage. The recycling of CDW can effectively solve such problems, and research on this topic has important practical significance. The paper selects 1090 articles on CDW recycling included in the core database of Web of Science from 2000 to 2021 as samples, and uses two sorts of bibliometric analysis software, VOSviewer and CiteSpace, to obtain the annual publication volume, country, journal, author, institution, keywords, and co-citation visualization atlas, analyzing the hotspots and development trends of CDW recycling research from two dimensions of time and space. The analysis results show that compared with developed countries, the research on CDW recycling and utilization started late, and the phenomenon of focusing on construction and ignoring environmental protection is obvious in China. At present, relevant research mainly focuses on three aspects: the performance of recycled aggregates, the management of CDW recycling and the improvement strategy of CDW recycling. The bibliometric analysis results help scholars in this field to quickly clarify the development trend of CDW recycling, provide research directions for China's CDW recycling and point out research hotspots, aiming to improve China's CDW recycling rate and promote sustainable social development.