道路沥青材料VOCs释放特性与抑制措施研究进展

Research Progress on VOCs Release Characteristics and Inhibition Strategies of Road Asphalt Materials

沥青作为常用的建筑材料被广泛应用于路面铺筑、房屋防水等领域。采用沥青材料铺筑的路面具有平整无接缝、行车舒适性好、维修方便等优点,是道路路面类型的主要选择方式。然而,沥青材料在使用过程中会向周围环境释放挥发性有机物(Volatile organic compounds,VOCs),VOCs严重影响空气质量、危害人体健康。深入开展沥青材料VOCs释放特性与抑制措施研究是发展绿色交通的重要手段之一。当前国内外学者分别从表征方法、组分组成特征及影响因素、抑制措施等方面开展研究。对研究成果归纳表明,目前沥青材料VOCs的表征方法尚未形成统一标准,导致研究成果难以对比分析;VOCs组分释放特征及影响因素未与沥青材料内部属性建立关联;当前抑制措施中的抑制剂开发缺乏理论指导,抑制剂存在抑制效率低、沥青性能差等缺点。本文综述了国内外关于沥青材料VOCs释放特性与抑制措施的研究现状,分别对沥青材料VOCs的表征方法、组分组成特征及影响因素、抑制措施进行介绍,分析了沥青材料VOCs现有研究存在的问题并对其未来研究进行展望。

As a common building material,asphalt is widely used in pavements,waterproofing,and other construction applications.Asphalt pavements are flat and seamless,making it comfortable for driving and convenient to maintain.As such,it is a popular preference among the various road pavement types.However,asphalt materials typically release volatile organic compounds(VOCs)to the surrounding environment during construction.These compounds seriously affect air quality and endanger human health.Further research on VOC release characteristics and suppression strategies with respect to asphalt materials is one of the important steps toward adopting and developing green transportation.At pre-sent,research has been conducted regarding the aspects of characterization methods,component characteristics,influencing factors,and suppression strategies.The research results show that there is no universal standard for characterizing VOCs emitted by asphalt,making it difficult to compare and analyze results.Furthermore,the composition characteristics and influencing factors of VOCs are not related to the internal properties of asphalt materials.Moreover,the development of suppression lacks theoretical guidance,which leads to low suppression efficiency and poor performance of asphalt.Accordingly,this paper summarizes the status of research conducted domestically and abroad on VOCs release characteristics and suppression strategies with regard to asphalt materials.The characterization methods,component characteristics,influencing factors,and suppression strategies are introduced.The existing problems and prospects future research are also analyzed.