【作者】 宋世杰；

【导师】 胡力群； 梁武星；

【作者基本信息】 长安大学 ， 道路与铁道工程， 2009， 硕士

【摘要】 沥青路面冷再生技术是指将旧沥青路面材料经铣刨加工后进行重复利用,并根据再生后结构层的结构特征,适当加入部分新骨料或细集料,按比例加入一定量的外掺剂和适量的水,在自然环境下连续完成材料的铣刨、破碎、添加、拌和、摊铺及压实成型,重新形成结构层的一种工艺方法。本文在国内外已有研究成果的基础上,根据国内普遍采用半刚性基层沥青路面这一结构特点,研究利用水泥为稳定剂的旧沥青路面的现场冷再生技术。提出了冷再生混合料的配合比设计方法；深入研究了旧沥青路面材料再生后的无侧限抗压强度、劈裂强度和抗压回弹模量等主要力学指标,分析了其强度随水泥用量、养生龄期和试验温度的变化规律,并建立了各指标之间的相互联系；对再生馄合料的稳定性能(水稳性和冻稳性)、抗冲刷性能和抗收缩性能开展了研究,并与规范推荐级配的水泥稳定碎石的路用性能进行了对比分析,综合评价了再生混合料的路用性能。此外,本文还研究了冷再生技术的施工工艺以及质量控制与检测,并将再生的混合料应用于路面基层,实践表明其满足相应的路用性能要求。本文还结合实体工程对旧沥青路面冷再生技术进行了技术经济比较,研究结果表明,就地冷再生技术是一项切实可行、有广阔发展前景的技术,尤其适用十缺乏砂石材料的地区和道路的大中修改建。更多还原

【Abstract】 Old in-place recycling technology of asphalt pavement technique that repeated using the old asphalt material of the road will a new kind of surface, according to the structural feature of recycling structural layer properly joining partial new aggregation or fine aggregate and pouring into the proper water and stable additional things,under natural environment completing a series of processing technology of the material and forming a structural layer again.Based on the research results from home and abroad, and the characteristic of the widely-adopted semi-rigid pavement, the thesis studies the cold in-place recycling technology stabilized by cement. And the thesis proposes the method of the mixture design of cold in-place recycling. The primary mechanical indexes of the recycled mixture are tested, including the unconfined compressive strength, the cleavage strength and the resilient modulus. The changing law of these indexes related to the cement content, the aged-period and the testing temperature is explored and the relationship between indexes is established. The pavement behavior and performance of designed mixture is studied and contrasted with the mixture which is recommended by the Technical Specifications for Construction of Highway Roadbases, including mechanical performance, stableness, anti-brushing performance, the anti-crack performance and fatigue performance. Moreover, the thesis delves on the construction craft and quality control of the cold in-place recycling technology. The recycled mixture is applied to the base and this is proven to meet the requirements of pavement performanceThe thesis also draws a comparison between cold in-place recycling and rebuilding. And the results show that the in-place cold recycling is a viable technology, has broad development prospects, especially in the areas where lack of stand stone for reconstruction and large and medium-sized maintenance.更多还原