植石水泥混凝土路面关键技术研究

发布时间：2018-05-05 04:06

本文选题：水泥混凝土路面 + 桥面铺装　；参考：《长安大学》2015年硕士论文

【摘要】：水泥混凝土路面传统表面纹理技术对路面抗滑降噪特性改善效果有限,并且耐久性差,路面运营一段时间后表面纹理衰减明显,极大地影响了水泥混凝土路面使用品质和安全性能。水泥混凝土桥面铺装体系层间发生剪切破坏,是桥面铺装体系常见病害之一,传统桥面粗糙处理技术对层间粘结有一定改善,但破坏现象仍普遍存在。本文提出基于“嵌入集料”工艺的植石技术,分析将其应用于水泥混凝土路面表面以及水泥混凝土桥面铺装体系时的适用性,并推荐不同应用方向的关键技术参数。通过室内试验,建立压入时间、压入深度与压入荷载之间的关系,分析水泥混凝土材料组成与石料参数对植石水泥混凝土施工工艺参数的影响;借鉴肯塔堡飞散试验原理,将飞散试验磨耗损失作为植石水泥混凝土界面强度评价指标,分析水泥混凝土强度、石料参数及盐分侵蚀对界面强度的影响;通过改变石料参数,分析植石技术对水泥混凝土路面抗滑特性和降噪特性的影响,并与传统表面纹理处理技术进行对比;通过铺装层间剪切试验,提出铺装体系抵抗变形能力的评价指标,并结合层间抗剪强度,分析石料参数、环境条件、荷载作用方式及界面粘结增强剂对层间抗剪性能的影响,此外还分析了水温循环作用对植石桥面铺装层间抗剪性能耐久性的影响。室内试验结果表明,水泥混凝土材料组成不同,压入荷载增长趋势也不相同,且石料参数对压入荷载影响十分显著;植石水泥混凝土磨耗损失呈两段式规律,石料参数及盐分侵蚀与磨耗损失息息相关;植石技术应用于水泥路面表面时,不同的石料参数组成条件下,抗滑降噪特性均有一定程度上的改善;根据石料参数对植石桥面铺装层间抗剪性能的影响,推荐了植石技术应用于水泥桥面铺装时的关键技术参数,相比较于常见的桥面粗糙处理工艺,植石桥面铺装具有更好的层间抗剪性能及耐久性;界面粘结增强剂应用工艺对铺装层间抗剪性能有显著影响,推荐采用后洒工艺。植石技术可在水泥混凝土表面形成丰富的纹理构造,无论应用于水泥混凝土路面表面,还是水泥混凝土桥面铺装体系,较之传统表面纹理技术,均具有明显技术优越性,但用于水泥路面表面时外观有待进一步改善。
[Abstract]:The traditional surface texture technology of cement concrete pavement has a limited effect on improving the anti-slip and noise characteristics of the pavement, and its durability is poor, and the surface texture attenuation is obvious after a period of operation. The quality and safety of cement concrete pavement are greatly affected. The shear failure of cement concrete bridge deck pavement system is one of the common diseases of bridge deck pavement system. Traditional bridge deck rough treatment technology has improved the bond between layers, but the failure phenomenon is still widespread. This paper presents a stone planting technique based on "embedded aggregate" technology, analyzes its applicability when it is applied to the surface of cement concrete pavement and the pavement system of cement concrete bridge deck, and recommends the key technical parameters in different application directions. Through indoor test, the relationship between indentation time, indentation depth and indentation load is established, and the influence of cement concrete material composition and stone material parameters on construction process parameters of stone-planting cement concrete is analyzed, and the theory of Kentucky Flying Test is used for reference to analyze the influence of cement concrete material composition and stone material parameters on the construction process parameters. In this paper, the wear loss of flying test is used as the evaluation index of the interface strength of cement concrete, the influence of cement concrete strength, stone parameters and salt erosion on the interface strength is analyzed, and the influence of stone parameters on the interface strength is analyzed. This paper analyzes the influence of stone planting technology on the anti-skid and noise reduction characteristics of cement concrete pavement, and compares it with the traditional surface texture treatment technology, and puts forward the evaluation index of anti-deformation ability of pavement system through interlayer shear test. Combined with the interlaminar shear strength, the influence of stone parameters, environmental conditions, loading mode and interfacial binder on the interlaminar shear resistance is analyzed. In addition, the effect of water temperature cycling on the durability of shear resistance of stone bridge deck pavement is also analyzed. The results of laboratory test show that the increasing trend of indentation load is different with different composition of cement concrete materials, and the influence of stone material parameters on compressive load is very significant. Stone parameters and salt erosion are closely related to wear loss. When stone planting technology is applied to the surface of cement pavement, the characteristics of anti-slide and noise reduction are improved to a certain extent under the conditions of different stone parameters. According to the influence of stone material parameters on the shear resistance of stone bridge deck pavement, the key technical parameters of stone planting technology applied to cement bridge deck pavement are recommended, compared with the common rough treatment technology of bridge deck. The interlaminar shear resistance and durability of bridge deck pavement are better, and the application of interfacial binder reinforcements has a significant effect on the interlaminar shear resistance of pavement, and the post-sprinkling process is recommended. Stone planting technology can form rich texture structure on cement concrete surface. Whether it is applied to cement concrete pavement surface or cement concrete bridge deck pavement system, it has obvious technical superiority compared with traditional surface texture technology. However, the appearance of cement pavement surface needs further improvement.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.216

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