再生技术对沥青混凝土生命周期环境负荷的影响

Effect of regeneration technology on environment impact of asphalt concrete during life cycle

采用生命周期评价方法,研究评价了不同再生技术对沥青混凝土生命周期中资源利用、能源消耗和环境排放的影响。研究表明,就地热再生对再生沥青混凝土制备的环境负荷影响最大,其次分别为厂拌热再生、厂拌冷再生、就地冷再生,但综合考虑不同再生技术生产的沥青混凝土所铺筑路面的使用寿命,按年平均环境负荷影响计算,则厂拌热再生的影响最小,其次为厂拌冷再生、就地冷再生,就地热再生影响最大。

In this paper, life cycle assessment is used to analyze the effect of regeneration technology on resource utilization, energy consumption and environmental emission of asphalt concrete in life cycle. The results show that the effect of on-site hot re- generation technology on environmental load of asphalt concrete daring life cycle is the largest which followed by the plant mix hot regeneration technology,plant mixed cold regeneration technology and on-site cold regeneration technology. But in consideration of the service life of the asphalt concrete pavement prepared by different regeneration techniques and the annual mean environment impact,the annual mean environment impact of plant mixed hot regeneration is the least,which followed by plant mixed cold re- generation technology and an-site cold regeneration technology,while the annual mean environment impact of on-site hot regenera- tion technology is the largest.