[摘　要]　从材料转变为废弃物的比例（废料率）的角度，分析了新建工程建筑废弃物产出水平，通过实地调查了解建筑废弃物的主要成份和产生来源，并以问卷调查的方式获得了主要建筑材料的废料率水平。经调查分析发现了不同类型建筑材料废料率的特点。通过对比，分析了国内施工企业建筑废弃物管理水平。

[关键词]　建筑废弃物,废料率,调查

Abstract: In this paper, the main components and sources of construction waste were identified by site visit, and the waste rates of various materials, which indicate the generation level of construction waste, were collected by questionnaire survey. The result analysis demonstrated the characteristics of waste rates of various building materials in different types of projects. The waste management level of domestic construction enterprises were further illuminated through comparative analysis.

Key words: construction waste; waste rate of material; investigation

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