基于改进肯塔堡飞散试验的沥青混合料优化设计  

Optimal Design of Asphalt Mixtures based on Improved Cantabro Test

作　　者：祝云豪 杨晚生 刘群艳 李闯民[1] 甘有为 ZHU Yun-hao;YANG Wan-sheng;LIU Qun-yan;LI Chuang-min;GAN You-wei(School of Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China;Jiangxi Yichun Municipal Transportation Construction Co.Ltd.,Yichun 337000,China)

机构地区：[1]长沙理工大学交通运输工程学院,长沙市410114 [2]江西宜春市政交通建设有限公司,宜春市337000

出　　处：《公路》2023年第3期49-57,共9页Highway

基　　金：江西省交通运输厅科技项目,项目编号2021H0019;长沙市科技计划项目,项目编号kq2004065;长沙理工大学专业学位研究生“实践创新与创业能力提升计划”项目,项目编号SJCX2021105。

摘　　要：为了研究沥青混合料长期使用过程中的抗松散性能,对肯塔堡飞散试验进行改进。基于改进肯塔堡飞散试验,选取集料种类、沥青种类、NRP掺量、级配类型4个因素,每个因素各取3个水平,用L9(43)正交表进行试验。采用飞散损失指标定量分析各个因素下每个水平对NRP改性沥青混合料抗飞散性能的影响效果,并通过极差分析方法得出影响飞散性能因素的主次顺序和最优组合。试验结果表明:各因素对抗飞散性能的影响主次顺序为级配类型>集料种类>NRP掺量>沥青种类;在试验选择的9种组合中,选用SMA-13、玄武岩、0.5%NRP掺量、SK70号基质沥青组合时,NRP改性沥青混合料抗松散性能最优。In order to study the loosening resistance of asphalt mixtures during long-term use,the Cantabro test is improved.Based on the modified Cantabro test,four factors,namely,aggregate type,asphalt type,NRP admixture,and grading type,and each factor with three levels,are selected to carry out orthogonal test using L9(43).The effect of each level on the anti-flutter performance of NRP modified asphalt mixtures is quantified by using the flutter loss index,and the order and optimal combination of the factors affecting the flutter performance are obtained by the extreme difference analysis method.The test results show that:the order of influence of each factor on the anti-flutter performance is grade type>aggregate type>NRP dose>asphalt type.Among the nine combinations selected in the test,when the combination of SMA-13,basalt,0.5% NRP content,and SK70# matrix asphalt is selected,the loose resistance of NRP modified asphalt mixture is the best.

关 键 词：道路工程 沥青混合料 改进肯塔堡飞散试验 正交试验 飞散损失 极差分析 

分 类 号：TU528.42[建筑科学—建筑技术科学] U414.03[交通运输工程—道路与铁道工程]