【作者】 李萍；

【导师】 倪富健；

【作者基本信息】 东南大学 ， 道路与铁道工程， 2005， 硕士

【摘要】 乳化沥青是一种性能优良的路面建筑材料,它具有施工快捷、工艺简单、节约资源和污染小等优点,因此它得到了越来越广泛的应用。本文通过对沥青乳化机理的分析,在大量试验的基础上研究开发出了适用于冷拌沥青混合料的乳化沥青,并对所研究开发的乳化沥青及改性乳化沥青进行了质量检测,满足BC-2型阳离子乳化沥青的各项技术要求,可以作为冷拌沥青混合料的粘结料。通过冷拌沥青混合料配合比试验的研究,提出了冷拌沥青混合料的配合比设计方法,首先用膜厚估算计算出冷拌沥青混合料初始乳液用量、然后用修正马歇尔试验对混合料的最佳乳液用量进行确定、最后用浸水马歇尔试验及飞散试验对最佳乳液用量进行了验证。针对冷拌沥青混合料普遍存在的强度形成缓慢、早期强度偏低的特点,在冷拌沥青混合料中添加水泥,并通过马歇尔试验、浸水马歇尔试验、劈裂试验及冻融劈裂等性能试验评价分析了水泥剂量对冷拌沥青混合料性能的影响,并提出经济合理的技术方案。最后,对冷拌沥青混合料的经济与社会效益进行了分析,结果表明冷拌沥青混合料对于偏远地区或远离热拌和厂的低等级道路来说是一种具有良好技术经济性的筑路材料,具有广阔的应用前景。更多还原

【Abstract】 Asphalt emulsion is a kind of pavement material of good performance. It has the advantages of convenient construction, simple technics, saving resource and low pollution. So it is used widely in recent years.In this paper, through the analysis of asphalt emulsification mechanism, a new kind of asphalt emulsion which is applicable for cold mix is made out after a great deal of experiments. The qualities of the asphalt emulsion and modified asphalt emulsion are checked, and they satisfy the requirements of BC-2 cationic asphalt emulsion and could be used in cold mix.Through the research on cold mix, the mix design method is put forward .Firstly, the initial content of asphalt emulsion is determined by estimating the film thickness. Secondly, the optimum asphalt emulsion content is determined after modified Marshall Test. Finally, Waterlogged Marshall Test and Scattering Loss Test are used to validate the optimum asphalt emulsion content.Aiming at the fact that cold mix forms strength slowly and its’earlier period strength is low, cement is added. After a great deal of experiments, it demonstrates the beneficial effects of adding cement to cold mix.It also analyzes the economic and social results of the cold mix. And it is showed that cold mix is a good material to low class road which is far from the hot mix plant.更多还原