Reuse of construction spoil in China: Current status and future opportunities. (25th March 2021)

• Record Type: Journal Article
• Authors: Xiao, Jianzhuang; Shen, Jianyu; Bai, Meiyan; Gao, Qi; Wu, Yuching
• Is Part Of: Journal of cleaner production. Volume 290(2021)
• Publication Date: 2021-03-25
• Subjects: Construction spoil -- Sintered brick -- Life cycle assessment (LCA) -- Artificial hill -- Soil cement; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2020.125742
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: The problem of construction spoil in China is severe and poses another great problem: how to reuse it in environmentally safe ways. This paper investigates various disposal methods of construction spoil in China, including the conventional landfill, foundation treatment, artificial hill, and subgrade. In addition, two new techniques for reusing construction spoil to produce soil-cement and sinter brick are reviewed and discussed. The resource management, application and development of soil cement are studied. Then, the history and current situation of the brick industry as well as the progress of research into sintered bricks is reviewed in detail. The future opportunities for creating sintered brick using construction spoil are explored, including the production of high porosity brick, highly compacted face brick, specially shaped bricks, construction of hybrid structures using sintered bricks, reinforced grouting components, and prefabricated components. From the perspective of life cycle assessment (LCA), the environmental benefits of using disposal technology for construction spoil are analyzed. And the ecological pros and cons of sintered bricks made from construction spoil are presented. Finally, constructive suggestions and recommendations for the brick sintering industry are presented. Highlights: Current status and existed technique for construction spoil in China are discussed. Basic properties of conventional and new type soil-cement are analyzed. Performance and application of sintered construction spoil bricks are investigated.