Construction and demolition wastes (CDWs) are not normally a concern of citizens who directly generate and deal with municipal solid waste (MSW) every day. However, waste from buildings and infrastructure poses both huge management challenges and opportunities to advance a society’s sustainable waste and resource management. This is due to (1) the vast quantity of waste produced in construction and demolition (C&D) activities and (2) the long periods products remain in the anthropogenic stock that leads to limitations when old products should be recycled due to the fact that hazardous components (even though these have been long banned) are included in those wastes. This is due to the adverse impact these hazardous components can have on human health and the environment once the built objects are dismantled and the respective components are to be recycled or disposed of. Also, quantities and types of C&D wastes are difficult to predict due to the variety of materials used for construction over the decades and the influence of economic development, as well as, for example, war events, earthquakes and tsunamis. Another CDW management challenge in at least some regions of the globe is the scarcity of sand and gravel resources due to rapid global urbanization that creates the predicted need for construction of an average of 13,000 new buildings every day through to 2050 (Autodesk, 2019).

中文翻译：

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建筑和拆除废物–未来的重大挑战！

每天直接产生和处理城市固体废物（MSW）的市民通常不关心建筑和拆除废物（CDW）。然而，来自建筑物和基础设施的废物既带来巨大的管理挑战，也带来了推进社会可持续废物和资源管理的机会。这是由于（1）建筑和拆除（C＆D）活动中产生的大量废物，以及（2）人为储存的产品长期存在，由于危险的事实，应限制回收旧产品的时间这些废物中包括了成分（即使长期禁止使用）。这是由于一旦拆除已建造的物体并且要回收或处置各个组件，这些有害组件可能会对人体健康和环境造成不利影响。而且，由于数十年来用于建筑的材料种类繁多以及经济发展的影响，以及战争事件，地震和海啸等，难以预测C＆D废物的数量和类型。至少在全球某些地区，CDW管理面临的另一个挑战是由于全球快速城市化导致的沙石资源稀缺，预计到2050年每天平均需要建造13,000座新建筑物（Autodesk，2019年）。由于数十年来用于建筑的各种材料以及经济发展的影响以及战争事件，地震和海啸，D废物难以预测。至少在全球某些地区，CDW管理面临的另一个挑战是由于全球快速城市化导致的沙石资源稀缺，预计到2050年每天平均需要建造13,000座新建筑物（Autodesk，2019年）。由于数十年来用于建筑的各种材料以及经济发展的影响以及战争事件，地震和海啸，D废物难以预测。至少在全球某些地区，CDW管理面临的另一个挑战是由于全球快速城市化导致的沙石资源稀缺，预计到2050年每天平均需要建造13,000座新建筑物（Autodesk，2019年）。