基于IDEAL-CT试验评价超薄磨耗层抗裂性能及指标分析  

Evaluation of crack resistance performance and index analysis of ultra-thin wear layer based on IDEAL-CT test

作　　者：袁波 彭期旺 李城 杜川 Yuan Bo;Peng Qiwang;Li Cheng;Du Chuan(Chongqing Zhixiang Paving Technology Engineering Co.,Ltd.,Chongqing 400064,China)

机构地区：[1]重庆市智翔铺道技术工程有限公司,重庆400064

出　　处：《山西建筑》2024年第13期135-138,共4页Shanxi Architecture

基　　金：重庆交通大学交通土建工程材料国家地方联合工程研究中心开放基金(TCEM-2023-07)。

摘　　要：为分析IDEAL-CT试验在评价超薄磨耗层沥青混合料抗裂性能时的适用性,结合该试验对12组超薄磨耗层沥青混合料进行测试,得到最大荷载、断裂能、裂缝扩展指数和抗裂指数4个指标;首先分析了各指标对沥青混合料抗裂性能排序的影响,然后采用熵权法和高低分组法对抗裂指标的区分度进行分析。结果表明:不同指标在评价沥青混合料抗裂性能时存在显著差异甚至相反的情况,从区分度来看抗裂指数和裂缝扩展指数最优,而最大荷载和断裂能不宜用于评价超薄磨耗层沥青混合料的抗裂性能。To analyze the applicability of the IDEAL-CT test in evaluating the crack resistance of the ultra-thin wear layer,tested 12 groups of ultra-thin wear layer asphalt mixtures,and calculated maximum load,fracture energy,crack propagation index and crack resistance index.Analyzed the ranking of the crack resistance of asphalt mixture,and compared the discrimination of crack resistance indexes by entropy weight method and high and low grouping method.The results show that there are significant differences or even opposites in the evaluation of the crack resistance of asphalt mixture in different indexes,and the crack resistance index and crack propagation index are the best from the perspective of discrimination,while the maximum load and fracture energy are not suitable for evaluating the crack resistance of asphalt mixture in ultra-thin wear layer.

关 键 词：超薄磨耗层 抗裂性能 区分度 熵权法 高低分组法 

分 类 号：TU528.42[建筑科学—建筑技术科学]