密实型低噪声路面动态模量的超声波法研究  

Study on Dynamic Modulus of Dense Structure and Low Noise Pavement by Ultrasound Method

作　　者：许雪莹[1] 曹卫东[2] 董旭峰[1] 葛剑敏[1] 王佐民[1] 

机构地区：[1]同济大学声学所,上海200092 [2]山东大学土建与水利学院,济南250061

出　　处：《噪声与振动控制》2006年第4期67-69,共3页Noise and Vibration Control

摘　　要：配制了传统的沥青混凝土(AC)、碎石沥青玛蹄脂(SMA)、不同橡胶粉掺量的骨架密实型低噪声路面等3类5个配比的沥青路面,采用超声波法测量了各类沥青路面的动态模量。并且分析了橡胶粉掺量对密实型低噪声路面动态模量的影响,初步得出了以橡胶粉含量为3%的密实型路面的减振降噪效果最好的结论。Three classes of asphalt mixtures were tested, namely, ordinary asphalt concrete, SMA, framework dense structure and low noise pavement with different percentage composition of rubber powder. The total mix was 5. Ultrasound method was employed to measure the dynamic modulus of these pavements. By comparing differences between different kinds of pavement, the effect of rubber powder on dynamic modulus was analyzed, and the conclusion that SMA with rubber power （ 3 % ） was the best material to reduce vibration and noise.

关 键 词：声学 动态模量 超声波 骨架密实结构 

分 类 号：TB533.2[理学—物理]