基于旋转压实方法进行乳化沥青冷再生配合比设计方法的研究

发布时间：2018-06-03 06:27

本文选题：乳化沥青混合料 + 旋转压实方法　；参考：《山东建筑大学》2014年硕士论文

【摘要】：经过上世纪90年代公路建设高峰期后,目前,我国的高速公路进入大中修时期,每年都有12%的沥青路面需要重新翻铺和维修,由此产生大量的废旧材料,废旧路面材料的再生利用是要解决的重要问题。乳化沥青再生技术可节约资源,降低工程造价,保护自然资源,遵循我国目前节能减排的发展理念,使有限的资金创造更好经济效益。本文针对乳化沥青冷再生混合料现行规范马歇尔设计方法存在的混合料成型、性能与现场不符等问题,通过室内外实验研究,提出基于旋转压实的混合料设计方法,并对混合料性能进行验证,提高再生混合料设计水平,为混合料应用提供技术支持。基于旋转压实的乳化沥青冷再生混合料室内配合比设计方法研究。本文结合青岛胶州湾再生项目,在室内采用旋转压实方法进行乳化沥青配合比设计。根据铣刨料抽提前后级配及回收沥青的评价分析,确定出合成级配。根据最大干密度相近的原则,找出与重型击实试验对应的旋转压实功,再变换不同含水量找出此压实功下最佳含水量。同样求出与马歇尔击实75次对应的压实功,在不同乳化沥青用量下旋转成型试件,根据试件干湿劈裂强度与实际施工所需确定乳化沥青用量,得出乳化沥青再生混合料的目标配合比。根据确定的目标配合比室内成型试件,将试件分别装袋和不装袋养生,找出室内试验和现场施工时最佳养生时间。基于旋转压实的乳化沥青冷再生混合料性能研究。根据确定的目标配合比,在室内旋转成型试件,检测其初期松散性能,变化不同的水泥用量成型50mm厚的车辙板以检测其高温、低温性能,变换不同旋转压实次数检验及分析再生混合料的抗剪能力和水稳定性。乳化沥青冷再生混合料现场性能验证研究。结合青岛胶州湾试验路现场施工,对施工前准备、现场施工工艺、养生后期取芯做了详细阐述,并检测分析现场取芯试件性能,验证旋转压实成型的可靠性,结果表明乳化沥青冷再生具有很好的路用性能,并有较高的社会,环境效益。
[Abstract]:After the peak period of highway construction in the 1990s, at present, the highway in our country has entered the period of major and medium repair. Every year, 12% of the asphalt pavement needs to be overlaid and repaired, resulting in a large number of waste materials. Recycling of waste pavement materials is an important problem to be solved. Emulsified asphalt regeneration technology can save resources, reduce project cost, protect natural resources, follow the development concept of energy saving and emission reduction in our country, and make limited funds create better economic benefits. In this paper, aiming at the problems existing in Marshall design method of cold recycled emulsified asphalt mixture, such as the mixture forming, the performance is not in accordance with the field, the mixture design method based on rotary compaction is put forward through indoor and outdoor experiments. The performance of the mixture is verified to improve the design level of recycled mixture and to provide technical support for the application of mixture. Research on Indoor mixture Design method of emulsified Asphalt Cold Recycling mixture based on Rotary Compaction. In this paper, combined with Qingdao Jiaozhou Bay Regeneration Project, a rotating compaction method is used to design emulsified asphalt mixture ratio. The synthetic gradation was determined according to the evaluation and analysis of the gradation before and after extraction of milling planer and the recovery of asphalt. According to the principle that the maximum dry density is close, the rotation compaction work corresponding to heavy compaction test is found, and the optimum water content under this compaction work is obtained by changing different water content. At the same time, the compaction work corresponding to 75 times of Marshall compaction is obtained, and the amount of emulsified asphalt is determined according to the dry and wet splitting strength of the specimen under different emulsified asphalt content. The target mixture ratio of emulsified asphalt recycled mixture is obtained. According to the determined target mix ratio, the samples were bagging and not bagging respectively, and the optimum health time of indoor test and field construction was found out. Research on performance of emulsified Asphalt Cold Recycling mixture based on Rotary Compaction. According to the target mix ratio, rotating the specimen in the room, testing its initial loose performance, forming 50mm thick rutting board with different cement content to detect its high temperature and low temperature performance. Test and analyze the shear resistance and water stability of recycled mixture with different rotational compaction times. Field performance Verification of emulsified Asphalt Cold Recycling mixture. Combined with site construction of Qingdao Jiaozhou Bay test road, the preparation before construction, site construction technology, and later stage of health coring are described in detail, and the performance of field coring specimen is tested and analyzed to verify the reliability of rotary compaction molding. The results show that cold regeneration of emulsified asphalt has good road performance, and has high social and environmental benefits.
【学位授予单位】：山东建筑大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U414

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