摘要
【目的】获得抗滑性能优良的改性乳化沥青微表处混合料。【方法】通过正交试验设计探究集料级配、改性乳化沥青掺量、外加水用量等因素对微表处混合料性能的影响;利用湿轮磨耗仪模拟道路交叉路口行车对路面的搓揉作用,进一步分析集料级配对微表处混合料抗滑衰变规律的影响。【结果】改性乳化沥青掺量、外加水用量和级配均对混合料的性能有不同程度的影响;微表处混合料的最优配比为:改性乳化沥青掺量和外加水用量分别为14%和10%,矿料级配为级配2。【结论】所制备的苯乙烯-丁二烯-苯乙烯嵌段共聚物(styrene butadiene styrene,SBS)改性乳化沥青混合料具有优良的抗滑性能,可广泛应用于沥青路面的养护中。
[Purposes]This study aims to obtain modified emulsified asphalt micro-surfacing mixture with excellent skid resistance.[Methods]Through orthogonal experiment,the influence of aggregate gradation,modified emulsified asphalt,water and other factors on the performance of micro-surfacing mixture was explored.The influence of aggregate gradation on the skid resistance decay law of micro-surfacing mixture was further analyzed by simulating the rubbing effect of driving on pavement at road intersection with asphalt emulsion wet wheel abrasion tester.[Findings]Modified emulsified asphalt,water and gradation all had different effects on the performance of the mixture.When the content of modified emulsified asphalt and water was 14%and 10%,and the mineral aggregate gradation was 2,the micro-surfacing mixture was the optimal ratio.[Conclusions]The emulsified asphalt mixture modified by styrenic block copolymers(SBS)has excellent skid resistance and can be widely used in the maintenance of asphalt pavement.
作者
孙志林
高超
马帅杰
SUN Zhiin;GAO Chao;MA Shuaijie(School of Traffic and Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China)
出处
《长沙理工大学学报（自然科学版）》
CAS
2023年第6期80-90,共11页
Journal of Changsha University of Science and Technology:Natural Science
基金
国家自然科学基金资助项目(52078062)。
关键词
路面抗滑性能
微表处
SBS改性乳化沥青
矿料级配
抗滑衰变
skid resistance of pavement
micro-surfacing
SBS modified emulsified asphalt
mineral aggregate gradation
skid resistance decay
