Lateral Permeability of Open-Graded Asphalt Mixture

被引:0
|
作者
Ma, Yaolu [1 ]
Chen, Xianhua [1 ]
Geng, Yanfen [1 ]
Zhu, Yu [1 ]
机构
[1] Southeast Univ, Sch Transportat, Nanjing 211189, Peoples R China
来源
CICTP 2019: TRANSPORTATION IN CHINA-CONNECTING THE WORLD | 2019年
基金
中国国家自然科学基金;
关键词
Pavement engineering; Open-graded asphalt mixture; Lateral permeability; Drainage design;
D O I
暂无
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This paper proposes a new approach to quantify the lateral permeability and retaining water effect on the drainage capability of open-graded asphalt mixture. Based on the water balance principle, a new device was designed to measure the lateral permeability of the open-graded asphalt mixture. The lateral permeability of open-graded asphalt mixture samples with different air voids ratio and height were compared. The permeability coefficient of vertical, lateral, and retaining water volume was identified to evaluate water permeability of open-graded asphalt mixture. Results show that lateral permeability is affected by a variation of voids ratio and height. Obvious lateral penetration appeared with the decline of voids ratio, and more flow that is lateral would induce as the increment of height for open-graded asphalt mixture. The retaining water can indirectly reflect the connected voids inside. Compared to vertical permeability, improving the capacity of lateral permeability is the effective way to drainage.
引用
收藏
页码:941 / 950
页数:10
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