将废旧塑料应用于沥青道路工程既可以改善路用性能,又可以促进废旧资源的高效利用和环境保护。概述了废旧塑料物理及化学回收产物在沥青道路工程中的应用情况,介绍了废旧塑料对沥青及其混合料的改性机理及影响因素。通过对研究成果进行总结归纳,梳理了废旧塑料对沥青及沥青混合料高温、低温、抗老化和疲劳性能的改善作用,分析了目前存在的问题,并展望了未来沥青道路工程用废旧塑料的研究方向。
The application of waste plastics in asphalt pavement engineering can improve pavement performance,and is crucial to promote the efficient utilization of waste resources and environmental protection.In this paper,the application of physical and chemical recycling products of waste plastics in asphalt pavement engineering was summarized.The modification mechanism and influencing factors of waste plastics on asphalt and its mixture were introduced.The improvement of waste plastics on the high temperature,low temperature,aging resistance and fatigue performance of asphalt and asphalt mixtures were combed by summarizing the previous research results.The present problems were analyzed and the future research direction of waste plastics in asphalt pavement engineering were prospected.
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基金资助
辽宁省科学技术计划(2019-ZD-0864)