建筑材料物化环境状况的定量评价

针对建筑材料造成的严重环境问题 ,运用生命周期评价方法 ,建立了建筑材料生命周期的评价体系和评价模型 ;并选择水泥、钢材和平板玻璃 3种在建设领域用量较大的建筑材料 ,研究 3种材料物化过程的环境影响 ,即材料在原材料获取阶段、生产阶段和运输过程产生的直接环境影响 ,以及由于使用能源而造成的间接环境影响。模型以物化环境影响负荷和资源耗竭系数作为衡量建筑材料环境影响大小的因子。评价结果表明 ,3种建筑材料的物化环境影响中 ,钢材最大 ,平板玻璃其次 ,水泥最小。该结果可作为建筑工程环境影响评价的基础数据 ,用于建筑工程生命周期环境影响评价和相关方的决策

Quantitative assessment of the embodied environmental profile of building materials

An environmental impact assessment model was developed for building materials based on the life cycle assessment methodology. The embodied environmental profiles of cement, steel, and flat glass were analyzed, including the direct impact of raw materials extraction, transport, and the production of building materials, and indirect impacts such as energy generation and consumption. The model takes the potential environmental impact burden and resource consumption indicator as the parameters to measure the environmental effect of building materials. The assessment results show that the embodied environmental effect of steel is the most, flat glass the next, and cement the least per ton, which can be used to assess the life cycle environmental impact of construction projects and help the stakeholders to make decision.