Xiao Jianzhuang, Ma Zhiming, Ding Tao
Department of Structural Eng., College of Civil Eng., Tongji University, Shanghai 200092, PR China; Key Laboratory of Advanced Civil Eng. Materials, Ministry of Education, Shanghai 200092, PR China.
Department of Structural Eng., College of Civil Eng., Tongji University, Shanghai 200092, PR China.
Waste Manag. 2016 Feb;48:334-343. doi: 10.1016/j.wasman.2015.09.018. Epub 2015 Oct 6.
A mass of construction and demolition (C&D) waste are generated in Shanghai every year, and it has become a serious environment problem. Reclaiming the waste concrete to produce recycled aggregate (RA) and recycled aggregate concrete (RAC) is an effective method to reduce the C&D waste. This paper develops a reclamation chain of waste concrete based on the researches and practices in Shanghai. C&D waste management, waste concrete disposition, RA production and RAC preparation are discussed respectively. In addition, technical suggestions are also given according to the findings in practical engineering, which aims to optimize the reclamation chain. The results show that the properties of RA and RAC can well meet the requirement of design and practical application through a series of technical measures. The reclamation chain of waste concrete is necessary and appropriate for Shanghai, which provides more opportunities for the wider application of RA and RAC, and it shows a favorable environmental benefit.
上海每年都会产生大量的建筑废弃物，这已成为一个严重的环境问题。回收废弃混凝土以生产再生骨料（RA）和再生骨料混凝土（RAC）是减少建筑废弃物的有效方法。本文基于上海的研究与实践，构建了废弃混凝土回收利用链。分别讨论了建筑废弃物管理、废弃混凝土处理、再生骨料生产和再生骨料混凝土制备。此外，还根据实际工程中的发现给出了技术建议，旨在优化回收利用链。结果表明，通过一系列技术措施，再生骨料和再生骨料混凝土的性能能够很好地满足设计和实际应用要求。废弃混凝土回收利用链对上海来说是必要且合适的，它为再生骨料和再生骨料混凝土的更广泛应用提供了更多机会，并且展现出良好的环境效益。
