沥青路面不同厂拌热再生方案经济环保性量化评价  

Quantitative evaluation of economic and environmental protection in different hot central plant recycling methods of asphalt pavement

作　　者：姚晓光 许涛[1] 王燕 YAO Xiaoguang;XU Tao;WANG Yan(College of Civil Engineering,Nanjing Forestry University,Nanjing 210037,China;College of Civil and Architecture Engineering,Chuzhou University,Chuzhou 239000,China;Key Laboratory of Road Structure and Material of Ministry of Transport(Changsha),Changsha University of Science&Technology,Changsha 410114,China)

机构地区：[1]南京林业大学土木工程学院,江苏南京210037 [2]滁州学院土木与建筑工程学院,安徽滁州239000 [3]长沙理工大学道路结构与材料交通行业重点实验室(长沙),湖南长沙410114

出　　处：《武汉大学学报（工学版）》2021年第12期1133-1139,共7页Engineering Journal of Wuhan University

基　　金：长沙理工大学道路结构与材料交通行业重点实验室开放基金资助项目(编号:kfj190304);江苏省研究生科研与实践创新计划项目(编号:KYCX20_0866)。

摘　　要：为了对4种不同厂拌热再生方案的经济环保性进行合理、客观的评价,以旧苯乙烯-丁二烯-苯乙烯嵌段共聚物(styrene-butadiene-styrene block copolymer,SBS)改性沥青路面为再生对象,借助大量计算及清单分析方法,对不同热再生方案的经济成本及环保效益进行了系统的量化分析。结果表明:4种方案中,先使用SK-90^(#)新基质沥青和再生剂恢复旧料表面沥青性能、然后添加SK-70^(#)基质沥青以满足再生料最佳油石比的再生方案,不仅有益于提高沥青混合料回收料(reclaimed asphalt pavement,RAP)的利用率、保证再生料性能优异,而且在经济和环保效益方面同样具有显著优势。以陕西省每年使用30万t厂拌热再生沥青混合料计算,相比于常用的添加新SBS改性沥青再生的方案,该方案可以节省经济成本和能源消耗分别约为924万元、1.0×10^(9)MJ。The objective of this study is to make a reasonable and objective evaluation of the economic and environmental protection of four kinds of hot central plant recycling methods. The reclaimed styrene-butadienestyrene block copolymer(SBS) modified asphalt pavement was used as the regeneration object in this paper.Then, a systematic quantitative analysis of the economic costs and environmental benefits of different recycling methods was conducted through a large number of calculations and the inventory analysis method. Results show that the fresh SK-90^(#)matrix asphalt and rejuvenating agent should be used primarily to restore the surface asphalt performance of reclaimed asphalt pavement(RAP), and then the SK-70^(#)should be added to meet the requirements of the optimal asphalt aggregate ratio of recycled mixture. Among the four methods, this method not only guarantees the performance of recycled mixture and improves the utilization rate of RAP, but also has significant advantages in terms of economic and environmental benefits. According to the dosage of hot central plant recycling mixture of approximately 3×10^(5)t in Shaanxi Province every year, the economic costs and energy consumption can be saved about 9.24 million yuan and 1.0×10^(9)MJ, respectively compared with the commonly used schemes of adding new SBS modified asphalt for regeneration.

关 键 词：沥青路面 厂拌热再生技术 再生方案 经济环保性 量化分析 

分 类 号：U416[交通运输工程—道路与铁道工程]