Dynamic Characteristics of Rubber Powder Modified Cement Asphalt Mortar

被引:9
|
作者
Li Yunliang [1 ,2 ]
Ou Yangjian [1 ]
Tan Yiqiu [1 ]
Lu Mingyu [3 ]
机构
[1] Harbin Inst Technol, Sch Transportat Sci & Engn, Harbin 150090, Peoples R China
[2] Harbin Inst Technol, Res Ctr Civil Engn, Harbin 150090, Peoples R China
[3] Hong Kong Polytech Univ, Dept Mech Engn, Hong Kong, Peoples R China
基金
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词
cement asphalt mortar (CA); rubber powder; natural frequency; damping;
D O I
10.4028/www.scientific.net/AEF.5.243
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Cement asphalt mortar (CA) is mainly applied in track system of high-speed railways for vibration attenuation. The impact on dynamics performance of CA with the admixture of rubber powder was studied. The beam specimen made of CA was manufactured for analyzing its vibration frequency and damping characteristics by free attenuation vibration tests. Results showed that there was no big change for fundamental frequency after admixture of rubber powder. However, high order frequency and structural damping increased with the increase of admixture amount. Damping ratio of CA was increased by admixing rubber powder, which can be better for energy absorption and vibration attenuation.
引用
收藏
页码:243 / +
页数:2
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