浅谈低噪声微表处级配设计

微表处作为一种经济、快捷、有效的路面预防性养护技术,在中国高速公路快速发展的今天,起着至关重要的作用。但在使用微表处时发现其车内噪声与热拌热铺沥青路面相比明显增大。为了解决该问题,该文从微表处的级配入手,通过改变关键筛孔的通过率,降低刚建成的微表处的构造深度和改变微表处的表面粗集料的分布状态,来达到降低其车内噪声,同时又满足抗滑能力的目的。

Elementary Discussion on Gradation Design of Low-noise Micro-surfacing

The micro-surfacing is an economically,fast and efficiently preventive maintenance technology of pavement,which plays the extremely important role in the fast development of the expressway in China now.However,it is found that the noise in a vehicle is obviously increased when using the micro-surfacing by compared with the hot-mixed hot-paved asphalt pavement.In order to solve this problem,the gradation of the micro-surfacing is started to change the passing rate of key sieve pore and to decrease the structure depth of the newly built micro-surfacing and to change the distribution state of surface coarse aggregate of micro-surfacing so as to reach the aim of decreasing the noise in a vehicle,and at the same time also to satisfy the anti-slip capacity.