基于病害成因的沥青混合料配合比设计方法研究  

Research on Asphalt-mix-design Method Based on Pavement Distress Cause

作　　者：徐世法[1] 赵自越 房聪 刘钟达 王菲菲 Xu Shifa;Zhao Ziyue;Fang Cong;Liu Zhongda;Wang Feifei(Beijing University of Civil Engineering and Architecture,Beijing Advanced Innovation Center for Future Urban Design,Beijing 100044,China;Beijing University of Civil Engineering and Architecture,Beijing Urban Transportation Infrastructure Engineering Technology Research Center,Beijing 100044,China;Henan Jiaoyuan Engineering Technology Group Co.,Ltd.,Zhengzhou 450018,China)

机构地区：[1]北京建筑大学未来城市设计高精尖创新中心,北京100044 [2]北京建筑大学北京市城市交通基础设施建设工程技术研究中心,北京100044 [3]河南交院工程技术有限公司,河南郑州450018

出　　处：《市政技术》2021年第11期24-29,共6页Journal of Municipal Technology

基　　金：国家自然基金项目(51678028,51978034);北京建筑大学未来城市设计高精尖创新中心重大科技项目(X18159);北京建筑大学研究生创新项目(PG2021036、PG2021041);北京建筑大学博士研究生科研能力提升项目(DG2021012);北京市自然科学基金与北京市教委联合基金项目(KZ202110016020);北京市属高校基本科研业务费专项基金(X20105);北京市交通行业科技项目(2020-kjc-01-360)。

摘　　要：目前城市主干路沥青路面的典型病害主要为车辙、开裂或水损害,由于沥青混合料的性能相互制约,导致病害的防治措施顾此失彼。为此,结合北京市城市主干路沥青路面各种病害的成因,提出一种基于病害成因的沥青混合料配合比设计方法。首先,选取冻断温度、疲劳寿命、低温抗剪强度为抗开裂指标,冻融劈裂强度比为抗水损害指标,动稳定度为抗车辙指标,通过室内试验确定各指标对应的合理油石比区间;然后,由各指标的共同区间确定油石比的最佳范围。结果表明,采用新方法设计的沥青混合料性能比马歇尔试验配合比设计方法更加均衡合理,能够有效提高沥青混合料的综合性能。The typical diseases of asphalt pavements of urban trunk roads in China are rutting,cracking or water damage.The performance of asphalt mixture restricts each other,which will lead to attend to one thing and lose sight of another to the prevention and control measures of diseases.According to the investigation results of asphalt pave ment diseases of urban trunk roads in Beijing,this paper puts forward a design method to solve this problem and balance the road performance of asphalt mixture.Firstly,freeze-cracking temperature,fatigue life and shear strength at low temperature are taken as anti-cracking indexes,freeze-thaw splitting strength ratio as water damage resistance index,and dynamic stability as anti-rutting index.The reasonable range of asphalt aggregate ratio corresponding to each index are determined by laboratory test.Finally,the optimal range is determined by the common range each index.The results show that the performances of asphalt mixture designed by the new method is more balanced and reasonable than the one by Marshall test mix design method.It can improve the comprehensive performance of as-phalt mixture.

关 键 词：沥青路面 沥青混合料配合比设计方法 病害成因 平衡设计 性能评价 

分 类 号：U414[交通运输工程—道路与铁道工程]