fl改性乳化沥青论文：重庆市沥青混凝土路面厂拌冷生设计及技术研究.docVIP

改性乳化沥青论文：重庆市沥青混凝土路面厂拌冷再生设计及技术研究 【中文摘要】我国经济的繁荣,促进了交通事业的发展。至2010年底我国公路通车总里程己经达到400万公里,其中高速公路7.4万公里,居世界第二位。我国现有公路中,20世纪90年代修建的己经陆续进入大、中修阶段。沥青再生技术是解决沥青路面废旧料的关键技术,具有显著的社会经济效益。首先,本文在借鉴国内外沥青路面再生技术方面的经验和研究成果上,进行旧沥青路面性能的研究,采用不同的调查方法进行路况调查,通过不同的RAP取样方法,获得有代表性的旧料来评价沥青的老化程度和集料状况。提出了结团状况指标,验证了该指标与马歇尔试验各指标的相关性。介绍了乳化沥青的反应机理,肯定了水泥在乳化沥青冷再生混合料中的作用。其次,本文介绍了配合比设计的各种方法,决定采用马歇尔设计方法和Superpave体积设计方法进行,确定了冷再生混合料的最佳含水量和最佳乳化沥青用量。并用马歇尔击实试验和旋转压实两种成型方法成型,测定两种试件的高温稳定性、低温抗裂性、抗水损坏等性能,并进行了比较,系统的阐述了不同乳化沥青冷再生混合料的路用性能。最后,总结出乳化沥青厂拌冷再生的施工工艺及经济效益分析。研究结论表明,针对我国大量高速公路需要维修或改建的现况,乳化沥青路面冷再生技术是一种非常适用且经济的手段,因此该技术有着广泛的应用前景。 【英文摘要】The development of traffic cause in advantage of economic prosperity in our country. The total mileage of highway has become to 400 million km, of which 74,000 km expressway, ranking second in the world by the end of 2010. Currently highway roads constructions have been confronted with large,medium repairment stage. Asphalt recycling technology is the key to treat asphalt pavement waste material.It has the remarkable social and economic benefits.First,based on the experience and research results about asphalt recycling technology at home and abroad, this paper researched the performance of old asphalt pavement,adopted different survey research methods, got representative old material to evaluate the aging degree and asphalt aggregates status through different RAP sampling method. Proposed group status indicators, erified correlation between the index and the index of Marshall test,introduces Reaction mechanism of emulsified asphalt, Supported the cement in role of emulsifying asphalt cement in the role of cold recycling mixture of emulsified asphalt.Secondly, this paper introduces the methods of mix design,and decided to adopt the Marshall and Superpave volume design methods, determined the optimum moisture and best emulsified bitumen dosage in cold reclaimed mix.Adpotde Marshall compaction test and gyratory compaction to mol