热熔胶材料在路面粘层油中的应用研究
发布时间：2019-01-19 13:20
【摘要】：近年来，路面相邻结构层间接触状况直接影响到道路使用品质和使用寿命。如果层间界面存在抗剪强度，抗拉拔强度不足的薄弱环节，就会使面层在粘合面上发生位移，严重时形成拥包，开裂，车辙等病害。科学、合理地喷洒粘层油，是提高沥青面层层间连接的有效性、确保沥青面层质量的有效措施之一。但随着近年来交通荷载量的增加，以往使用的粘层油中很大一部分已无法满足行车要求。为有效提高路面层间的强度，本论文在粘层油中加入了一种新型热熔胶材料并进行了试验研究。 本论文首先分析了拉拔强度和剪切强度这两种影响层间结合状况指标的组成和影响因素。随后讨论了路面常用的粘层材料的基本要求，最后通过剪切试验和拉拔试验的方法来探究文中使用的热熔胶在各种影响因素下在路面层间使用效果。 试验结果表明，粘层材料本身的粘弹性和层间表面的粗糙程度决定了层间抗剪强度的大小，而拉拔强度主要受粘层材料本身粘弹性的影响。此外，两种强度共同受试验速度、外界温度、水的影响较大。试验结果还证明，，在粘层材料中加入文中使用的热熔胶材料后可以有效提高路面层间的强度，对改善路面层间的结合状况、减少路面结构病害有重要意义。
[Abstract]:In recent years, the contact between adjacent structures has a direct impact on the quality and service life of road. If there is a weak link of shear strength and insufficient tensile strength at the interlayer interface, the surface layer will displace on the bonding surface and form the diseases such as cladding, cracking, rutting and so on. It is one of the effective measures to improve the effectiveness of interlayer connection and ensure the quality of asphalt surface layer. However, with the increase of traffic load in recent years, most of the viscous oil used in the past can not meet the traffic requirements. In order to improve the strength of pavement layer effectively, a new hot melt adhesive material was added to the viscous layer oil in this paper. In this paper, the composition and influence factors of drawing strength and shear strength are analyzed. Then the basic requirements of the common adhesive layer materials are discussed. Finally, by means of shear test and drawing test, the effect of the hot melt adhesive used in this paper on the pavement layer is studied under various influence factors. The experimental results show that the viscoelasticity and the roughness of the interlaminar surface determine the interlaminar shear strength, while the pull-out strength is mainly affected by the viscoelasticity of the laminated material itself. In addition, the two kinds of strength are affected greatly by the test speed, external temperature and water. The test results also show that adding the hot melt adhesive material to the adhesive layer material can effectively improve the strength of the pavement layer, and it is of great significance to improve the condition of the pavement layer bonding and reduce the pavement structure disease.
【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
本文编号：2411412
[Abstract]:In recent years, the contact between adjacent structures has a direct impact on the quality and service life of road. If there is a weak link of shear strength and insufficient tensile strength at the interlayer interface, the surface layer will displace on the bonding surface and form the diseases such as cladding, cracking, rutting and so on. It is one of the effective measures to improve the effectiveness of interlayer connection and ensure the quality of asphalt surface layer. However, with the increase of traffic load in recent years, most of the viscous oil used in the past can not meet the traffic requirements. In order to improve the strength of pavement layer effectively, a new hot melt adhesive material was added to the viscous layer oil in this paper. In this paper, the composition and influence factors of drawing strength and shear strength are analyzed. Then the basic requirements of the common adhesive layer materials are discussed. Finally, by means of shear test and drawing test, the effect of the hot melt adhesive used in this paper on the pavement layer is studied under various influence factors. The experimental results show that the viscoelasticity and the roughness of the interlaminar surface determine the interlaminar shear strength, while the pull-out strength is mainly affected by the viscoelasticity of the laminated material itself. In addition, the two kinds of strength are affected greatly by the test speed, external temperature and water. The test results also show that adding the hot melt adhesive material to the adhesive layer material can effectively improve the strength of the pavement layer, and it is of great significance to improve the condition of the pavement layer bonding and reduce the pavement structure disease.
【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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