废弃混凝土再生骨料生命周期环境成本的计算方法研究

Study on calculation method of waste concrete recycled aggregate using life cycle environmental cost

采用ER-LCC方法对废弃混凝土再生骨料生命周期环境成本进行了计算研究,根据对我国西北某市废弃混凝土处理的调查,构建了一般情形下、理想情形两种废弃混凝土再生骨料处理系统,应用生命周期评价方法,对系统的环境影响进行了分析,并用货币价值表示系统的环境影响分值。结果表明:传统情形下的废弃混凝土处理系统的环境影响最大;在生命周期环境影响层面上,可在一定运距内设置一定规模的再生厂集中处理废弃混凝土。一般情形下,在140.9 km运距内,可设置再生厂;理想情形下,运在1 730.6 km运距内,可设置再生厂。

The waste concrete recycled aggregate life cycle environmental cost of computing research using method of environment-related life-cycle costing （ER-LCC）,according to a survey of China,the northwest city waste handling concrete constructed under normal circum- stances, the ideal situation two waste concrete recycled aggregate processing system, using life cycle assessment methods and the environmental impact of the system are analyzed, and to show the system of environmental impact score with a monetary value.The results show that the tradi- tional situation of waste concrete processing system of environmental impact, from the perspective of life cycle environmental impact,within a certain distance, set a certain amount of regeneration plant centralized processing of waste concrete is feasible.Under normal circumstances,in the distance 140.9 km can set to regenerate plants;under the ideal circumstance,in the 1 730.6 km distance can set to regenerate plants.