重载条件下复合式路面防反技术研究

发布时间：2018-02-03 15:42

本文关键词： 道路工程复合式路面防反性能室内疲劳加载试验高抗拉复合防反材料　出处：《重庆交通大学》2015年硕士论文　论文类型：学位论文

【摘要】：近年来,随着交通量的增大和车辆轴载的增加,复合式路面这种长寿命路面结构逐步得到推广。复合式路面既具有水泥混凝土路面承载力强的特点,又可发挥沥青路面平整度高、行车舒适的优点;但这类复合式路面存在一个亟需解决的问题——反射裂缝,并且在使用周期内几乎无法避免。从以往工程经验来看,反射裂缝虽然无法彻底根除,但采取合理措施后是可以防治和缓解的。鉴于此,本文对新建复合式路面的荷载型反射裂缝展开研究,旨在研发一种新型的路面防反材料,主要用于重载交通条件下的新建复合式路面工程。论文首先分析了反射裂缝的产生及扩展机理,重点分析了加筋作用、应力吸收作用、沥青加铺层厚度等对防治反射裂缝的作用;其次,通过室内MTS疲劳加载试验和滚动荷载疲劳试验,研究了加铺玻纤格栅、聚酯玻纤布、经编复合聚酯玻纤防裂布、弹性体SBS防水卷材、道路抗裂贴YN-25、道路抗裂贴YN-50、HZ/ZD-4型防反体系、镀锌铁网材料的防反性能,通过试验结果对每种防裂材料的防反机理进行了深入分析,并对防反效果进行了排序;再次,论文提出了一种双层防反结构体系,探索了双层防反结构和不同沥青面层摊铺方式的防反效果;最后,作者优选强加筋材料和应力吸收材料复配出一种适用于重载交通条件的防反新材料,通过室内试验对其防反性能进行了验证,并对其施工质量控制体系进行了研究。研究结果表明:①以终裂疲劳加载次数为评价指标,八种防裂材料防治荷载型反射裂缝效果的排序为镀锌铁网HZ/ZD-4型防反体系道路抗裂贴YN-50道路抗裂贴YN-25经编复合聚酯玻纤防裂布弹性体SBS防水卷材聚酯玻纤布玻纤格栅无防反材料,加筋作用和应力吸收作用是防治或延缓反射裂缝的关键因素,特别是重载条件下应优先选用强加筋材料防治路面反射裂缝;②通过复配技术研发的高抗拉复合防反材料防反效果十分显著,集“加筋+应力吸收+防水”三大功能于一体,其中强加筋材料(建议使用不锈钢丝网)起到防反作用,应力吸收材料起到保护强加筋材料不被锈蚀、应力吸收和方便施工的作用;③当高抗拉复合防反材料与水泥板之间的粘结材料选取聚氨酯胶粘剂或环氧类胶粘剂时,层间粘结性能良好,可做到常温施工;④高抗拉复合防反材料性价比高,社会经济效益显著,具有良好的推广应用前景。
[Abstract]:In recent years, with the increase of traffic volume and the increase of vehicle axle load, the long-life pavement structure of composite pavement has been gradually popularized. The composite pavement has the characteristics of strong bearing capacity of cement concrete pavement. It can also bring into play the advantages of high smoothness and comfortable driving of asphalt pavement. However, there is a problem that needs to be solved in this kind of composite pavement, which is the reflection crack, which is almost unavoidable in the life cycle. According to the past engineering experience, the reflection crack can not be completely eradicated. However, reasonable measures can be taken to prevent and alleviate. In view of this, this paper studies the load-type reflective cracks of the new composite pavement, aiming to develop a new type of pavement anti-reaction material. It is mainly used in the construction of new composite pavement under heavy traffic conditions. Firstly, the mechanism of reflection crack is analyzed, especially the effect of reinforcement and stress absorption. The effect of asphalt overlay thickness on preventing reflection crack; Secondly, through indoor MTS fatigue loading test and rolling load fatigue test, the overlay glass fiber grille, polyester glass fiber cloth, warp-knitted composite polyester glass fiber anti-crack fabric, elastomer SBS waterproof membrane were studied. YN-25, YN-50, HZ / ZD-4 anti-reaction system, anti-reaction performance of galvanized iron mesh material. Based on the experimental results, the anti-reaction mechanism of each kind of anti-cracking material is analyzed in depth, and the anti-reaction effect is sorted. Thirdly, the paper puts forward a kind of double-layer anti-reaction structure system, and explores the anti-reaction effect of double-layer anti-reaction structure and different paving methods of asphalt surface. Finally, the author selects the strong reinforced material and the stress absorption material to produce a new anti-reaction material which is suitable for heavy load traffic conditions. The anti-reaction performance of the material is verified by laboratory tests. And the construction quality control system is studied. The results show that the final crack fatigue loading number is taken as the evaluation index. The order of effect of eight kinds of anti-crack materials to prevent load type reflection crack is: galvanized iron mesh HZ/ZD-4 type anti-reaction system road anti-crack sticker YN-50 road anti-crack paste YN-25 warp-knitted polyester glass fiber anti-crack fabric elasticity. Body SBS waterproof roll polyester glass fabric glass fiber grille no antireflective material. Reinforcement and stress absorption are the key factors to prevent or delay reflective cracks, especially under heavy load, strong reinforced materials should be selected to prevent and cure reflective cracks. (2) the anti-reaction effect of high-tension composite antiseptic material developed by compound technology is very remarkable, which integrates the three functions of "reinforced stress absorption and waterproofing". The strong reinforced material (stainless steel wire mesh) is recommended to prevent reaction, and the stress absorption material can protect the strong reinforced material from corrosion, stress absorption and easy construction. (3) when polyurethane adhesive or epoxy adhesive is chosen as the bonding material between high tensile composite antireflective material and cement board, the interlayer bond property is good and can be used in normal temperature construction; 4High ratio of property to price and remarkable social and economic benefit of high tension resistant compound antireflective material have good prospect of popularization and application.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.2

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