PAM-10/OGFC-10沥青混合料渗水性能对比研究  

Comparative study of water permeability of PAM-10/OGFC-10 asphalt mixture

作　　者：关宏信[1] 李俊资 高煜 王文强[3] 姜旺恒 杨海荣[1] GUAN Hongxin;LI Junzi;GAO Yu;WANG Wenqiang;JIANG Wangheng;YANG Hairong(School of Traffic&Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China;Xi'an Branch of Central South Survey Design Institute,Xi'an 710068,China;Foshan Communications Investment Group Co.,Ltd.,Foshan 528042,China)

机构地区：[1]长沙理工大学交通运输工程学院,湖南长沙410114 [2]中南勘察设计院西安分院,陕西西安710068 [3]佛山市交通投资集团有限公司,广东佛山528042

出　　处：《长沙理工大学学报（自然科学版）》2024年第3期107-115,共9页Journal of Changsha University of Science and Technology:Natural Science

基　　金：国家自然科学基金资助项目(52078062);湖南省自然科学基金资助项目(2020JJ4604)。

摘　　要：【目的】探讨多孔沥青混合料PAM-10与开级配排水沥青混合料OGFC-10渗水性能的差异,为排水路面沥青混合料类型的选取提供一定的参考。【方法】对空隙率为12.5%、14.0%、15.5%、17.0%的PAM-10及空隙率为22.0%的OGFC-10沥青混合料试件开展连通空隙率试验、计算机断层扫描(computed tomography,CT)空隙内部特征试验、竖向渗透系数试验、抗冲刷性及抗堵塞性试验,对比分析两种排水沥青混合料的渗水性能。【结果】PAM-10的内部空隙结构比OGFC-10的更容易形成连通空隙;空隙率为17.0%的PAM-10竖向渗透系数与空隙率为22.0%的OGFC-10的相当;动水冲刷对OGFC-10的影响大于对PAM-10的影响;OGFC-10的抗堵塞性能比PAM-10的差。【结论】PAM-10的竖向渗透性、抗冲刷性能及抗堵塞性能均比OGFC-10的更优。[Purposes]This paper aims to study the difference in water permeability between porous asphalt mixture PAM-10 and open-graded asphalt mixture with water drainage function OGFC-10,so as to select asphalt mixture types for drainage pavement.[Methods]PAM-10 asphalt mixture specimens with void rates of 12.5%,14.0%,15.5%,17.0%and the OGFC-10 asphalt mixture specimen with the void rate of 22.0%were subjected to the connected void rate test,vertical permeability coefficient test,scouring resistance test,and clogging resistance test were conducted,and their void interior characteristics were analyzed by computed tomography(CT).The water permeability of the two kinds of asphalt mixtures was compared.[Findings]The void structure of PAM-10 makes it easier to form the connected voids than OGFC-10.The vertical permeability coefficient of PAM-10 with the void rate of 17.0%is similar to that of OGFC-10 with the void rate of 22.0%.The effect of dynamic water scouring on OGFC-10 is greater than that on PAM-10.OGFC-10 has poorer clogging resistance than PAM-10.[Conclusions]The vertical permeability,scouring resistance,and clogging resistance of PAM-10 are all better than those of OGFC-10.

关 键 词：道路工程 沥青混合料 渗水性能 空隙特征 PAM-10 OGFC-10 抗堵塞 

分 类 号：U414[交通运输工程—道路与铁道工程]