功能型超微表处路面养护材料设计研究

发布时间：2018-06-05 13:47

本文选题：预防性养护 + 表面功能恢复　；参考：《长安大学》2014年硕士论文

【摘要】：路面在长期使用过程中，受到车轮荷载以及自然环境因素的反复作用，极易出现路面磨光、表面微裂纹等路面病害问题；若不能对其进行及时有效的处理，将会导致路面抗滑能力下降，路表水渗入路面内部，造成更严重的路面损坏。目前国内外处理此类问题的主要方法是进行路面的预防性养护，其中微表处、雾封层、稀浆封层等一些表面处置技术最为常见。传统的微表处路面车辆行驶噪音大，路面服务质量较差；雾封层路面存在一定的抗滑性问题，路面耐久性不良；稀浆封层路面施工工艺复杂，对于高等级路面表面功能的修复效果不佳。为了有效解决路面的早期病害问题，快速恢复路面原有表面功能，本文在传统的路面预防性养护技术的基础上，，开展了功能型超微表处路面养护材料的设计研究。课题基于乳液悬浮体系成膜理论，研究乳化沥青基体与固体填料、高分子聚合物、功能型填料等材料的配伍性，设计制备一种多功能的沥青乳液结合料，通过涂覆工艺在路表形成一种超薄（0.5-1mm）的养护功能层，用以填补路表微裂纹，达到路面防水、抗滑、融雪、降噪等使用目的。研究采用多类型乳化剂复配的方法，首先制备出适合填料悬浮的高效乳化沥青基体；通过单因素控制变量法，对功能型超微表处材料进行配合比设计，确定出各类添加剂的最佳掺量及配比；再结合室外试验测试以及实体工程应用，研究超微表处材料的路用性能以及功能改善措施；最后与常规路面早期养护方案进行效益对比分析，明确课题研究的工程实用价值。研究结果表明：功能型超微表处材料用于路面早期养护时，可以有效恢复路面表面功能，提高路面服务质量的同时延长使用寿命。超微表处材料施工工艺简单、环保，节省养护费用，具备良好的经济、环保和社会效益；对于沥青路面、水泥混凝土路面表面功能恢复均有较好的改善效果，适用于高速公路、城市道路、隧道公路以及桥面铺装等交通场所的路面预防性养护，有着十分广阔的应用前景。
[Abstract]:During the long-term use of the pavement, the road surface is prone to surface polishing and surface micro-cracks, which are frequently affected by wheel loads and natural environment factors, if it cannot be dealt with in a timely and effective manner, This will result in a decrease in the ability of the pavement to resist sliding and the surface water will seep into the interior of the pavement, causing more serious damage to the pavement. At present, the main methods to deal with this kind of problems at home and abroad are the preventive maintenance of pavement, among which some surface disposal techniques such as micro-surface, fog seal and slurry seal are the most common. The traditional micro-surfacing pavement has a lot of noise and poor service quality; the fog seal pavement has some problems of anti-skid resistance and poor durability; the construction technology of slurry seal pavement is complex. In order to effectively solve the problem of early disease of pavement and restore the original surface function of pavement quickly, this paper is based on the traditional preventive maintenance technology of pavement. The design and research of pavement maintenance materials at functional ultrasurface are carried out. Based on the film forming theory of emulsion suspension system, the compatibility of emulsified asphalt matrix with solid filler, polymer and functional filler was studied, and a multi-function asphalt emulsion binder was designed and prepared. In order to fill the micro-crack of road surface and achieve the purpose of waterproofing, anti-skid, snow-melting and noise reduction, the method of multi-type emulsifier compound is studied, and the maintenance function layer is formed on the surface of the road by coating process (0.5-1mm), which is used to fill the micro-crack of the road surface. Firstly, the high efficient emulsified asphalt matrix suitable for filler suspension was prepared, and the optimum dosage and proportion of various additives were determined by single factor control variable method. Combined with outdoor test and solid engineering application, the road performance and function improvement measures of the ultrafine surface materials are studied. Finally, the benefits are compared and analyzed with the early maintenance scheme of conventional pavement. The results show that the functional ultrafine surface material can effectively restore the surface function of pavement and prolong the service life while improving the service quality of pavement when it is used in the early maintenance of pavement. Ultrafine surface material construction technology is simple, environmental protection, save maintenance costs, with good economic, environmental and social benefits; for asphalt pavement, cement concrete pavement surface function recovery has a better effect, suitable for highway, The preventive maintenance of urban road, tunnel highway and bridge deck pavement has a broad application prospect.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U414

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