多孔沥青混合料级配与骨架强度关系  

Relationship between Gradation and Skeleton Strength of Porous Asphalt Concrete

作　　者：陈自福 褚跃 顾兴宇[2] 汤俊卿 CHEN Zi-fu;CHU Yue;Gu Xing-yu;Tang Jun-qing(Anhui Transportation Holding Group Co.Ltd,Hefei 230000,China;School of Transportation,Southeast University,Nanjing 210000,China)

机构地区：[1]安徽省交控建设管理有限公司,合肥市230000 [2]东南大学交通学院,南京市210000

出　　处：《公路》2023年第9期17-26,共10页Highway

基　　金：2018年国家自然科学基金委员会资助项目,项目编号51878162;2022年国家自然科学基金委员会资助项目,项目编号52278442。

摘　　要：通过骨架贯入试验,对多孔沥青混合料(PAC)骨架强度与不同筛孔通过率之间的关系进行了研究。并得出如下结论:(1)2.36~4.75 mm粒径大小的石料会为PAC-13混合料提供一部分骨架强度,因此混合料2.36mm通过率越高,混合料骨架强度越小;(2)4.75 mm通过率对PAC-13混合料骨架强度影响不大;(3)对多孔沥青混合料骨架强度具有最大影响的筛孔是9.5 mm筛孔,多孔沥青混合料骨架强度会随9.5 mm通过率的增长呈现出先增加后减小的趋势。骨架强度与高温稳定性具有较好的相关性,因此可以根据上述试验结果,对PAC-13设计级配范围进行改进。The relationship between the strength of porous asphalt mixture(PAC)skeleton and the passing rate of different screens is studied by skeleton penetration test.The outcomes indicated the following conclusions:1)Aggregates with particle sizes between 2.36 mm to 4.75 mm can provide part of the skeleton strength for PAC-13 mixtures,so the higher the passing rate of 2.36 mm mixture,the lower the skeleton strength of mixture;2)The passing rate of 4.75 mm has little effect on the skeleton strength of PAC-13 mixture;3)The screen that has the greatest influence on the skeleton strength of the porous asphalt mixture is the 9.5 mm sieve,and the skeleton strength of the porous asphalt mixture will first increase and then decrease with the increase of the 9.5 mm passing rate.There is a good correlation between skeleton strength and high temperature stability,so the design grading range of PAC-13 can be improved according to the above test results.

关 键 词：多孔沥青混合料 骨架强度 级配 骨架贯入试验 

分 类 号：U416.217[交通运输工程—道路与铁道工程] TU528.42[建筑科学—建筑技术科学]