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首页> 外文会议>International Conference on Advances in Building Technology Vol.2, Dec 4-6, 2002, Hong Kong, China >BALANCE THEORY FOR RECYCLING OF CONSTRUCTION AND DEMOLITION WASTES
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BALANCE THEORY FOR RECYCLING OF CONSTRUCTION AND DEMOLITION WASTES

机译：拆建废料回收的平衡理论

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摘要

The key to reduce construction and demolition wastes (C&D wastes) lies in finding a way to make them valuable. Recycling of C&D wastes into profitable commodities is one of the effective means. Balance of the supply of C&D wastes and the demand of recycled C&D waste products (Balance Theory) is recommended in new developments. The maturity of Balance Theory requires gradual establishment of recycling facilities. These facilities are capable to accept and handle not only inert materials but also other C&D wastes like wood and wood products, cardboard, metal, plastics etc. The Balance Theory rouses construction workers to adopt the idea of reduction of wastes. They are educated to clean their working places constantly and collect all construction wastes they generated into separate collection spots within the construction site. The site management personnel is required to establish site facilities and set up conditions in employment contracts and subcontracts for workers and subcontractors to follow. The culture of separating wastes at sources must be established and widely adopted so that Balance Theory could be realised. All in all, Balance Theory advocates the amount of wastes generated from a construction project and sent for recycling process must be equivalent (or proportional) to the amount of the recycled C&D products imported and used as construction materials for that project. Evaluation of the Balance Theory can be extended to a group of developments within a district or even augmented to a city as a whole. Zero C&D wastes sent to landfill may be too idealistic, however, minimisation of C&D wastes could be realised if Balance Theory is enforced. Appropriate actions taken by the Government may be needed to encourage the execution of the Balance Theory when recycling facilities and the green working culture of construction participants are well developed. Balance Theory can be first carried out in government projects as pilot scheme. The proportion of imported and exported amount of C&D wastes be reviewed and adjusted to suit the adoption and development of the Balance Theory.
机译：减少拆建废物（拆建废物）的关键在于找到一种使它们有价值的方法。将拆建废料回收成有利可图的商品是有效的手段之一。在新的开发中，建议平衡C＆D废物的供应量与回收的C＆D废物产品的需求（平衡理论）。平衡理论的成熟要求逐步建立回收设施。这些设施不仅可以接收和处理惰性材料，还可以接收和处理其他拆建废物，例如木材和木制品，纸板，金属，塑料等。平衡理论促使建筑工人采用减少废物的想法。他们受教育要不断清洁工作场所，并将产生的所有建筑垃圾收集到建筑工地内的单独收集点。要求现场管理人员建立现场设施并在雇佣合同和分包合同中设置条件，以供工人和分包商遵循。必须建立并广泛采用从源头分类废物的文化，以便可以实现平衡理论。总而言之，平衡理论主张从建设项目中产生并送往回收过程的废物数量必须与进口并用作该项目建筑材料的回收拆建产品的数量相等（或成比例）。平衡理论的评估可以扩展到一个区域内的一组开发项目，甚至可以扩展到整个城市。送到填埋场的零拆建废物可能过于理想化，但是，如果实施平衡理论，则可以实现拆建废物的最小化。如果充分利用了回收设施和施工参与者的绿色工作文化，则可能需要政府采取适当的措施来鼓励执行平衡理论。平衡理论可以首先在政府项目中作为试点计划进行。审查和调整拆建废物进出口量的比例，以适应平衡理论的采用和发展。

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