温拌半柔性复合路面结构研究

发布时间：2018-01-06 13:29

本文关键词：温拌半柔性复合路面结构研究　出处：《重庆交通大学》2015年硕士论文　论文类型：学位论文

【摘要】：温拌半柔性复合路面,是通过在利用温拌技术成型的开级配大孔隙沥青混合料中灌注特制水泥胶浆复合而成的一种高节能低排放、综合使用性能优良的新型路面结构形式。该路面结构将刚性路面和柔性路面的优点相结合,加入温拌剂大大降低能源消耗,大幅减少有害气体及粉尘的排放,极大地改善了施工环境,提高了路面的综合路用性能。因此,对其进行开发和应用研究具有较好的意义。论文首先研究了温拌剂对沥青各指标及沥青混合料性能的影响,得到温拌技术的优势体现;进而对基体沥青混合料配比及水泥胶浆配比进行研究,为保证复合路面结构良好提供先决条件;再通过正交试验对温拌半柔性复合路面的路用性能进行全面评价,以突出其结构优势;为确定路面设计参数,进行了回弹模量试验研究,从而确定了温拌半柔性复合路面的设计理论与方法;根据温拌半柔性复合路面结构特性,对其施工方法及工艺进行了系统研究;最后对温拌半柔性路面的社会经济效益及工程应用前景进行了分析,并对温拌技术的节能减排贡献作出了评价。从而形成关于温拌半柔性复合路面的从节能减排到性能优良,从设计到施工的一套完整的技术与理论,作为温拌技术与半柔性技术结合的先驱,为推动温拌半柔性复合路面在实体工程中的应用提供良好的技术支撑。通过室内试验及理论分析,温拌半柔性复合路面材料在适宜的配合比、成型工艺、养护方法等条件下,与普通沥青混凝土及普通半柔性复合路面相比,其节能减排效果明显,同时表现出很好的高温稳定性、水稳定性、低温抗裂性、抗疲劳性、耐磨性等,尤其高温稳定性、水稳定性及耐磨性得到了很大的改善,温拌添加剂的使用对路面高温、低温及水稳定性能也有一定的改善作用。同时,根据回弹模量试验结果可以判定温拌半柔性复合路面结构仍偏柔性,因此其设计理论与方法与普通柔性路面相似,其施工方法及工艺只需在现有的柔性路面施工工艺上稍加改进即可,不需要过多的经济投入购置新设备。
[Abstract]:Warm mixing semi-flexible composite pavement is a kind of high energy saving and low emission compound made by pouring special cement paste in open-graded and macroporous asphalt mixture formed by warm mixing technology. The pavement structure combines the advantages of rigid pavement and flexible pavement, and the addition of warm mixing agent greatly reduces energy consumption and greatly reduces the emission of harmful gas and dust. The construction environment is greatly improved and the comprehensive road performance of the pavement is improved. It is of great significance to study its development and application. Firstly, the influence of warm mixing agent on asphalt index and asphalt mixture performance is studied, and the advantages of warm mixing technology are obtained. Furthermore, the mixture ratio of matrix asphalt mixture and cement paste is studied, which provides a prerequisite for the good structure of composite pavement. Through orthogonal test, the road performance of warm-mixed semi-flexible composite pavement is comprehensively evaluated to highlight its structural advantages. In order to determine the design parameters of the pavement, the elastic modulus test is carried out to determine the design theory and method of the warm mixed semi-flexible composite pavement. According to the structural characteristics of warm mix semi-flexible composite pavement, the construction method and technology are studied systematically. Finally, the social and economic benefits and engineering application prospect of warm mixed semi-flexible pavement are analyzed. And the contribution of warm mix technology to energy saving and emission reduction is evaluated, so as to form a complete set of technology and theory about warm mix semi-flexible composite pavement from energy saving to excellent performance, from design to construction. As a pioneer of the combination of warm mixing technology and semi-flexible technology, it provides a good technical support for promoting the application of warm-mixed semi-flexible composite pavement in solid engineering, through laboratory tests and theoretical analysis. Compared with ordinary asphalt concrete and common semi-flexible composite pavement, the effect of energy saving and emission reduction of warm mix semi-flexible composite pavement material is obvious under the suitable mix ratio, molding technology, maintenance method and so on. At the same time, good high temperature stability, water stability, low temperature crack resistance, fatigue resistance, wear resistance, especially high temperature stability, water stability and wear resistance have been greatly improved. The use of warm mixing additives can also improve the pavement performance of high temperature, low temperature and water stability. At the same time, according to the results of elastic modulus test, it can be judged that the structure of warm mixed semi-flexible composite pavement is still flexible. Therefore, its design theory and method are similar to those of common flexible pavement, and its construction method and technology only need to be improved slightly on the existing flexible pavement construction technology, and it does not need too much economic investment to purchase new equipment.
【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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