多空隙沥青混合料及其胶结料的应用与研究现状

The Application and Research Status of Porous Asphalt Mixture and Its Binder

摘要: 国内外研究表明多空隙沥青路面凭借其较大空隙率具有透排水与降噪功能。文中通过总结多空隙沥青路面在国内外的发展应用现状，发现影响多空隙沥青混合料性能最为重要的因素是使用的沥青胶结料的性能要足以满足其大空隙率的特性。介绍了几种可用于多空隙沥青混合料的胶结料发现其推广应用的最大阻碍是过于高昂的造价，因而在发现橡胶沥青可以基本满足多空隙沥青混合料胶结料要求的前提下，提出采用橡胶粉和高黏改性剂对基质沥青进行复合改性，一方面可以减少高黏改性剂的用量降低成本，另一方面也可以合理利用废旧轮胎。如此既节约了成本又使轮胎废弃物得到再次利用，实现节能减排和环境保护。

Abstract: Researches at home and abroad show that porous asphalt pavement has the functions of water permeability and noise reduction by virtue of its large void ratio. By summarizing the development and application status of multi void asphalt pavement at home and abroad, it is found that the most important factor affecting the performance of multi void asphalt mixture is that the performance of asphalt binder should be enough to meet the characteristics of large porosity. This paper introduces several kinds of binders which can be used in multi void asphalt mixture. It is found that the biggest obstacle to its popularization and application is too high cost. Therefore, on the premise that rubber asphalt can basically meet the requirements of multi void asphalt mixture binder, it is proposed to use rubber powder and high viscosity modifier to modify the base asphalt. On the one hand, it can reduce the amount of high viscosity modifier and reduce the cost; on the other hand, it can also make rational use of waste tires. In this way, not only the cost is saved, but also the tire waste is reused to achieve energy conservation and environmental protection.