国内外路用阻燃沥青的研究现状与展望

Research status and development trend of flame-retardant asphalt at home and abroad

沥青作为一种优良的道路粘结材料应用于公路建设已有多年历史,但沥青的易燃、燃烧难以扑灭、释放大量有毒有害浓烟等问题,需要进行阻燃处理才能在隧道路面工程得到安全应用。主要介绍国内外阻燃沥青的研究现状及进展,并分别介绍阻燃沥青阻燃机理以及阻燃剂和助剂的应用概况,简述有关沥青阻燃性能的测试方法及其存在问题,论述了未来沥青阻燃剂正朝着无卤化、低烟化、低毒性和耐水性的方向发展。鉴于路用沥青材料的使用特点,对沥青阻燃剂的选择要充分考虑来源丰富、价格低廉、热稳定性好和工艺简便,不能严重影响沥青及其混合料的路用性能。

As a kind of excellent road bonding material, asphalt has been widely used in highway construction for many years. But asphalt is highly flammable and gives out a lot of smoke while burning. Its hazards cannot be ignored. To get safe application in the tunnel pavement engineer- ing, we need flame retardant treatment on asphalt. The current research status of flame retardant asphalt at home and abroad was introduced and flame retardant mechanism of the flame retardant asphalt and the general application situation of the flame retardant agent and additives were intro- duced respectively. The testing methods of flame retardant performance and existing problems of them were described, and the future development trend of flame retardant asphalt was discussed which are no halogenated and low smoking with low toxicity and water resistance. Considering the use of asphalt on road, the flame retardant agents should be rich in source with low cost and good thermal stability. Preparation technology of the flame retardant asphalt should be simple and the flame retardant agents should not seriously influence the asphalt and its mixture perform- ances. 4 tabs, 3 figs, 44 refs.