水基高分子聚合物BTA及其混合料性能研究

发布时间：2018-04-20 17:57

本文选题：水基高分子聚合物 + 新型BTA混合料　；参考：《北京建筑大学》2017年硕士论文

【摘要】：长期以来沥青及其混合料以其优良性能成为工程中使用最广泛的一种筑路材料,但是沥青及其混合料在使用过程中存在着许多不足,如生产耗能高、污染环境、危害健康等。这些都与当今社会发展中提倡的节能环保、以人为本的建设理念不符,所以道路工程研究人员一直都在积极寻找能够替代沥青的新型路面结合料。水基高分子聚合物BTA(Black Top polymer Asphalt)是一种用于道路面层的冷拌冷铺的新型材料。它具有耗能低、储存性好、环境污染小、施工方便等优点。无论从技术、经济还是环保角度上考虑,对这种水基高分子聚合物BTA混合料应用技术方法的研究,都有着十分重要的现实意义。同时由于BTA混合料冷拌冷铺工艺带来的刚度过大、松散剥落、水稳定性能较差等技术难题也影响了该技术方法的推广使用。本文在国内外已有水基聚合物混合料研究成果的基础上,分析水基高分子聚合物BTA及其混合料产生技术问题的主要原因,通过以乳化沥青替代部分BTA、水泥替代部分矿粉、掺加木质素纤维等措施,有效改善了BTA混合料的路用性能,并设计实现一种符合我国规范要求的新型BTA混合料。研究中,首先确定了新型BTA混合料的成型方法、养生条件以及混合料配合比,然后对于新型BTA混合料的路用性能进行了室内试验评价,包括其高温稳定性,低温稳定性,水稳定性,渗水性能和抗疲劳破坏性能等。研究结果显示,采取相应措施改进的新型BTA混合料的路用性能较常规BTA混合料有了很大改善,尤其混合料的水稳定性和耐久性能有得到有效提高,可以满足环保型聚合物材料筑路工程的使用条件。
[Abstract]:For a long time, asphalt and its mixture have become the most widely used road building materials in engineering because of their excellent performance. However, there are many shortcomings in the use of asphalt and its mixture, such as high energy consumption in production, environmental pollution, harm to health and so on. All these do not accord with the idea of energy saving and environmental protection and people-oriented construction, so road engineering researchers have been actively looking for new road binders that can replace asphalt. Water-based polymer BTA(Black Top polymer Asphalt is a new type of cold cold paving material for road surface. It has the advantages of low energy consumption, good storage, small environmental pollution and convenient construction. No matter from the point of view of technology, economy or environmental protection, it is of great practical significance to study the application of this water-based polymer BTA mixture. At the same time, due to the technical problems of BTA cold mixing cold paving technology, such as large rigidity, loose spalling, poor water stability and other technical problems, the popularization and application of this technology is also affected. Based on the research results of water-based polymer mixture at home and abroad, this paper analyzes the main reasons for the technical problems of water-based polymer BTA and its mixture, and replaces some mineral powder with emulsified asphalt and cement. With the addition of lignin fiber, the road performance of BTA mixture is effectively improved, and a new type of BTA mixture is designed and realized in accordance with the requirements of our country's code. In the research, the forming method, the health condition and the mix ratio of the new BTA mixture are first determined, and then the road performance of the new BTA mixture is evaluated in laboratory, including its high temperature stability and low temperature stability. Water stability, water permeability and fatigue failure resistance. The results show that the road performance of the new BTA mixture with corresponding measures is greatly improved than that of the conventional BTA mixture, especially the water stability and durability of the mixture can be effectively improved. It can meet the use condition of environmental protection polymer material construction project.
【学位授予单位】：北京建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U414

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