大空隙沥青混合料配合比设计与性能研究  

Design and Performance Study of Large Void Asphalt Mixture Proportions

作　　者：许斌 张灿 赵全胜[1] Xu Bin;Zhang Can;Zhao Quansheng(School of Architecture and Engineering,Hebei University of Science and Technology,Shijiazhuang 050021,China;Zhonglu High Tech(Beijing)Highway Technology Co.,Ltd.,Beijing 100088,China)

机构地区：[1]河北科技大学建筑工程学院,河北石家庄050021 [2]中路高科(北京)公路技术有限公司,北京100088

出　　处：《市政技术》2024年第6期263-269,284,共8页Journal of Municipal Technology

摘　　要：针对国省干线公路对抗滑、降噪功能需求日益提高的问题,通过对大空隙沥青混合料配合比设计与性能研究,分别选取了PAC-13型和PAC-10型大空隙沥青混合料,在试验路段分别采用了4组不同配合比进行施工,之后对铺筑后的试验路段进行了路用性能检测。研究结果表明:PAC-13型大空隙沥青混合料的最佳油石比为4.6%,PAC-10型大空隙沥青混合料的最佳油石比为4.8%;随着0.6~4.75 mm集料含量的增加,空隙率、有效空隙率和有效空隙率百分比均减小;PAC-13型试件路面容易形成丰富的宏观纹理,促进道路抗滑性能提升,使得在同样的环境条件下,其表现出更为优异的抗滑性能;PAC-10型大空隙沥青混合料的空隙率最大,空隙的曲折度最高,吸声效果最好。该研究采用的大空隙沥青混合料满足规范要求,能够为国省干线公路抗滑、降噪功能的提升提供参考。In order to the increasing demand for anti slip and noise reduction functions of national and provincial trunk highways,the mix design and performance was studied.PAC-13 and PAC-10 type of large void asphalt mixtures were selected as the example.Four different mix proportions were used for construction on the experimental section.And road performance testing was conducted on the paved experimental section.The research results indicate that the optimal oil stone ratio of PAC-13 type large void asphalt mixture is 4.6%.The one of PAC-10 type large void asphalt mixture is 4.8%;With the increases of aggregate content from 0.6~4.75 mm,all the void fraction,effective void fraction and effective void fraction percentage decrease;PAC-13 test specimens are prone to forming rich macroscopic textures on the road surface,which promotes the improvement of road anti-skid performance and results in more excellent anti-skid performance under the same environmental conditions;PAC-10 type of large void asphalt mixture has the maximum void fraction,the highest degree of curvature in the voids,and the best sound absorption effect.The large void asphalt mixture meets the regulatory requirements and can provide reference for improving the anti-skid and noise reduction functions of national and provincial trunk highways.

关 键 词：道路工程 沥青路面 配合比设计 抗滑 降噪 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]