溶解性胶粉改性沥青的微细观结构与流变性能研究

项目名称： 溶解性胶粉改性沥青的微细观结构与流变性能研究

项目编号： No.51478351

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 建筑环境与结构工程学科

项目作者： 黄卫东

作者单位： 同济大学

项目金额： 83万元

中文摘要： 溶解性胶粉改性沥青在性能、环保、成本等方面有较好的优势，但目前研究主要集中于性能验证与评价方面。溶解性胶粉改性沥青作为一种复杂的混合物，伴随复杂的化学反应，呈现出比SBS改性沥青更复杂的流变特性，从单一尺度或角度都不足以把握其复杂的流变特性。 本项目从微观角度研究聚合物在沥青中分子量分布与分子结构及其变化，从细观角度研究聚合物在沥青中的相态结构，从宏观角度研究流变性能，并对老化、热存贮性能及混合料性能进行评价。通过研究揭示流变性能、分子量分布、相态结构在复杂反应过程中的变化规律，建立流变性能、分子量分布、相态结构与各影响因素之间的关系，提出溶解性胶粉改性沥青的制备工艺与配比组成,建立流变性能与分子量分布、相态结构的本构方程，以期沟通宏观材料流变性质与微细观结构参数之间的联系。研究成果可用于指导性能评价与工程应用，并可推动改性沥青的技术进步，为废旧轮胎的处理找到一条解决之道。

中文关键词： 溶解性胶粉改性沥青；细观结构；微观结构；流变性能；分子量分布

英文摘要： Terminal blend rubberized asphalt has shown great advantages on performance, environmental protection and costing, but current research mainly focuses on performance validation and evaluation. Terminal blend rubberized asphalt has complex composition, complicated chemical reaction and exhibits more complex rheology than SBS modified asphalt, therefore it is difficult to understand the complex rheology properties from single scale. First of all, distribution of molecular mass and molecular structure of polymers as well as their changes in terminal blend rubberized asphalt will be analysed from micro scale. Secondly, morphology properties of polymers in asphalt will be measured from meso scale . Thirdly, rheology properties will be tested from macro scale. Furthermore, anti-aging properties, storage stability and mixture performance of terminal blend rubberized asphalt will be studied. The objective of this study is to find out how variables affect rheological properties, distribution of molecular mass and morphology structure in the process of reacting, thus identifing the formula and production process of terminal blend rubberized asphalt, and build up a constitutive equation between rheological properties, distribution of molecular mass and morphology structure of terminal blend rubberized asphalt, so as to build a bridge between macro rheological properties and meso-micro structure. The research can provide an useful guide for terminal blend rubberized asphalt producing, formula design, performance evaluation and its construction. Moreover, this research will make a step forward to asphalt technology development and waste tire consumption.

英文关键词： terminal blend rubberized asphalt;meso-structure;micro-structure;rheological properties;distribution of molecular mass