橡胶沥青混合料级配优化设计试验  

Design and Test of the Gradation Optimization of Rubber Asphalt Mixtures

作　　者：丁晨曦 范凯亮 DING Chenxi;FAN Kailiang(Shandong Taishan Transportation Planning and Design Consulting Co.,Ltd.,Tai'an,Shandong 271000,China;Jinan Branch,Jining Hongxiang Highway Survey and Design Research Institute Co.,Ltd.,Jinan,Shandong 250000,China)

机构地区：[1]山东泰山交通规划设计咨询有限公司,山东泰安271000 [2]济宁市鸿翔公路勘察设计研究院有限公司济南分公司,山东济南250000

出　　处：《黑龙江交通科技》2025年第3期45-49,共5页Communications Science and Technology Heilongjiang

摘　　要：设计了5组不同的橡胶沥青间断级配方案,并借助分形理论对混合料的性能进行了定量评价,主要得出以下结论:(1)橡胶沥青混合料的各项路用性能对粗集料和细集料的敏感度表现出明显的差异。细集料的用量对混合料的抗水毁能力具有显著影响,为了确保混合料的水稳定性,细集料的分形维数应当>2.50。粗集料的用量则对混合料的高温稳定性具有较大影响。(2)不同级配的混合料表现出的力学性能有一定差异。特别地,混合料的黏聚力主要受到细集料用量的影响。在设计的五组级配方案中,细集料含量最多的混合料展现出最大的黏聚力。(3)油石比和压实功均对橡胶沥青混合料的路用性能有较大影响。This paper designs five different discontinuous gradation schemes for rubber asphalt mixtures and employs fractal theory to quantitatively evaluate the performance of these mixtures.The main conclusions drawn from these studies are as follows:(1)The road performance of rubber asphalt mixtures shows distinct sensitivity to coarse and fine aggregates.Specifically,the quantity of fine aggregate significantly impacts the mixture's resistance to water damage.To ensure the water stability of the mixture,the fractal dimension of the fine aggregate should be greater than 2.50.The quantity of coarse aggregate significantly affects the high-temperature stability of the mixture.(2)Different gradations of mixtures exhibit varying mechanical properties.Particularly,the cohesion of the mixture is primarily influenced by the quantity of fine aggregate.Among the five gradation schemes designed,the mixture with the highest content of fine aggregate exhibited the greatest cohesion.(3)The oil-stone ratio and compaction work have a significant impact on the road performance of rubber asphalt mixtures.

关 键 词：橡胶沥青混合料 水稳定性 分形维数 高温稳定性 油石比 压实功 

分 类 号：U414[交通运输工程—道路与铁道工程]