针对微表处路面车内噪声较大的问题,利用驻波管装置分别测试了不同级配、拌和工艺、橡胶粉目数和含量共12种混合料的吸声系数。研究结果表明:与普通的微表处路面相比,低噪声微表处具有较大的吸声系数和良好的抗磨耗能力。通过在普通级配设计上增加7.1mm筛严格控制集料粒径分布、添加60目橡胶粉1.5%经湿法工艺成型,可以使混合料在有效频段的吸声系数提高到0.34。 Aiming at the problem of large noise in the surface of micrometer surfacing vehicle, the sound absorption coefficient of 12 kinds of mixture with different gradation, mixing process, rubber powder number and content were tested respectively by standing wave tube device. The results show that compared with ordinary surface at the surface, the low noise micro-surface has a larger absorption coefficient and good wear resistance. By adding 7.1mm sieve in the normal level design strictly control aggregate particle size distribution, add 60 mesh rubber powder 1.5% by wet process molding, can make the mixture in the effective frequency band absorption coefficient increased to 0.34.