针对沥青含蜡量高、粘结力差、延伸度差、温度敏感性大，不能满足高性能道路材料要求的现状,本项目提出首先合成适用于沥青基纳米复合材料的有机化层状硅酸盐,然后以其为改性剂，通过适当的方法制备层状硅酸盐/沥青有机无机纳米复合材料。系统研究层状硅酸盐/沥青有机无机纳米复合材料的制备工艺、组成、微观结构及性能之间的关系规律，并通过计算机模拟探讨层状硅酸盐对沥青的改性机理。旨在形成适用于沥青基纳米复合材料的有机化层状硅酸盐的新的合成方法；获得层状硅酸盐/沥青有机无机纳米复合材料的制备技术；从微观结构和分子层面阐明层状硅酸盐对沥青性能的影响。该课题的研究对于层状硅酸盐片层与沥青基体分子之间的相互作用机制的认识具有非常重要的科学意义。

Owing to the high wax content, poor adhesiveness, low ductility and high temperature sensitivity, the domestic asphalt can not satisfy the requirement of high performance road materials. So this research project proposes a new route to overcome these shortcomings of the domestic asphalt. Firstly, the organic layered silicate which is suitable for the formation of asphalt based nanocomposites is synthesized. Then, by using the organic layered silicate as the modifier for asphalt, layered silicate/asphalt organic-inorganic nanocomposite is prepared by proper methods. The relationship between the preparation techniques, composition, microstructures and properties of the nanocomposites is systematically studied. And the modification mechanisms of layered silicates is studied by means of computer simulation. The firt purpose of this project is to form the novel methods to synthesize the organic layerered silicate suitable for the asphalt based nanocomposites. The second purpose is to obtain the techniques to prepare the layered silicate/asphalt organic-inorganic nanocomposite. The last one to clarify the effect of layered silicates on the properties of asphalt on the molecular level. This study is of great importance for understanding the interaction mechanisms between the silicate layers and the molecules of asphalt.