摘要
融冰雪路面能够在寒冷环境下保障路表抗滑和道路通行能力。文中采用自制高黏改性沥青,基于填充体积等效置换法将矿粉替换为融雪剂,评估了不同融雪剂掺量对高黏改性沥青混合料高温稳定性能、低温抗裂性、抗水损害性能和集料飞散抵抗性能的影响。试验表明,内掺融雪剂的蓄盐型高黏改性沥青混合料,其高、低温性能、水稳定性及集料飞散抵抗性,均符合现行规范中沥青混合料性能指标要求。当矿粉完全被置换为融雪剂时,需要加入抗剥落剂以提高混合料的水稳定性能。因此蓄盐型沥青混合料路面,建议融雪剂最佳掺入量为矿粉35%~70%。
Snow and ice on roads seriously threaten the safety of traffic operations,while the traditional’passive’snow and ice removal technology is to remove snow after snow.Snow removal does not remove ice,which not only wastes a lot of manpower and material resources,but also causes certain harm to the road surface and surrounding infrastructure and environment.As a kind of active deicing technology,salt storage asphalt pavement has attracted more and more attention.It mainly adopts salt storage asphalt pavement additive to replace fine aggregate or mineral powder in asphalt mixture to change the internal material composition of traditional pavement.Under the action of vehicle load and capillary,the snow melting salt contained is gradually precipitated to the pavement,which plays an active role in deicing.In this paper,self-made high-viscosity modified asphalt was used to replace part or all of the mineral powder with snow melting agent based on the filling volume equivalent replacement method.The effects of different snow melting agent contents on the high-temperature stability,low-temperature crack resistance,water damage resistance and aggregate scattering resistance of high-viscosity modified asphalt mixture were evaluated.Results show that the high and low temperature performance,water stability and aggregate scattering resistance of salt storage high viscosity modified asphalt mixture with snow melting agent can meet the requirements of asphalt mixture performance index stipulated in the current specification.When the mineral powder is completely replaced as a snow melting agent,an anti-stripping agent needs to be added to improve the water stability of the mixture.Therefore,it is suggested that the optimum amount of snow melting agent is 35%~70%for salt storage asphalt mixture pavement.
作者
吕晓晔
王军
姚毅
李晓娟
郑明岩
周敦宏
Lv Xiaoye;Wang Jun;Yao Yi;Li Xiaojuan;Zheng Mingyan;Zhou Dunhong(Xi’an Qintong Asphalt New Technology Development Co.,Ltd.,Xi’an Shaanxi 710016,China;Shaanxi Transportation Holdinss Group Co.,Ltd.,Xi’an Shaanxi 710077,China;Highway Bureau of Xianyang,Xianyang Shaanxi 712000,China;Xi’an Huaze Highway Material Co.,Ltd.,Xi’an Shaanxi 710065,China;Chang’an University,Xi’an Shaanxi 710064,China)
出处
《山西建筑》
2025年第7期95-99,共5页
Shanxi Architecture
基金
陕西省技术创新引导专项(基金)(项目编号:2022CGBX-28)
陕西省交通运输厅科研项目(项目编号:23-82K)。
关键词
路面工程
高黏改性沥青
融雪剂
蓄盐沥青混合料
路用性能
pavement engineering
high-viscosity modified asphalt
snow-melting agent
salt storage asphalt mixture
road performance
作者简介
吕晓晔(1971-),女,高级工程师,从事市政工程技术咨询、道路材料研究及新技术应用推广等工作;通信作者:周敦宏(1989-),男,工程师,从事道路新材料研发与产业化研究。
