煤沥青粘结力良好、抗滑性能优异,广泛应用于传统工业领域以及新材料领域,但煤沥青加热熔融时产生苯并芘等有毒物质,因此改性煤沥青备受关注。综述了煤沥青以及改性煤沥青的研究进展,介绍了煤沥青的改性机理,对煤沥青路用的可行性进行了分析。随着对改性煤沥青研究的日趋深入,未来煤沥青有望在筑路材料领域取代沥青。煤沥青作为路用沥青不仅可以使资源再利用,还可以降低筑路成本。
Coal tar pitch is widely used in traditional industrial and new materials fields because of its fine cohesion and skid resistance.However,benzopyrene and other toxic substances are produced when coal tar pitch is heated and melted.Therefore,modified coal tar pitch has attracted much attention.The modification mechanism of coal tar pitch was introduced,and analysed the feasibility of coal tar pitch used in road,summarized the research progress of coal tar pitch and modified coal tar pitch.With the deepening of research on modified coal tar asphalt,coal tar pitch will be expected to replace asphalt in the field of road building materials in the future.Coal tar pitch used as road asphalt not only can reuse resources,but also reduced the cost of road construction.
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基金资助
国家自然科学基金(51506018);重庆市科委(cstc2015jcyjA50025)
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