导　　师： 张宜洛

学科专业： 082301

授予学位： 硕士

作　　者： ;

机构地区： 长安大学

摘　　要： 目前,我国正处在现代化城市建设和公路交通发展的新时期,人民的生活水平日益提高,汽车保有量迅猛增加。为了响应国家节约资源和保护环境的号召,废旧轮胎如何处理成为一个亟待解决的社会问题。其中,将废旧轮胎磨细成橡胶粉应用于公路建设中得到了最为广泛的关注,既可以达到废弃物“一站式”的无害化处理和利用,又可以改善路面的使用性能,延长路面的使用寿命。 本文研究了橡胶改性沥青的改性机理,通过大量的室内试验,分别探讨了不同的橡胶粉掺量、不同的橡胶粉细度、不同种类的基质沥青和不同的加工工艺对于橡胶改性沥青性能的影响。参考试验结果并结合实际工程的需要,提出了橡胶改性沥青的现场加工方法。 通过微波辐射和添加活化剂的方法,对橡胶粉进行了表面活化处理。研究了微波辐射和活化剂的作用原理,通过试验分别探讨了不同的微波加热时间、不同的微波火力以及不同的活化剂掺量对于橡胶改性沥青性能的影响。然后与未经活化处理的橡胶改性沥青进行对比,得知经过微波辐射和活化剂处理的橡胶改性沥青,性能得到很大改善。 采用本文研究的试验方案制备橡胶改性沥青,借鉴OGFC沥青混合料的设计经验,确定一个目标级配。在目标级配下,进行橡胶沥青OGFC-13混合料的路用性能试验,并与基质沥青混合料、SBS改性沥青混合料进行对比。试验结果显示,橡胶沥青OGFC混合料的高温性能、低温性能和水稳定性能表现出一定的优势,是一种能够满足实际工程需要的好材料。 At present, our country enters the modern urban construction and road transportation new period. With increasing living standards, there are more and more cars in our country. In order to respond to the call of country, saving resources and protecting environment, handling waste tires is a significant issue of to be solved.The way of grounding waste tires into rubber powder is applied widely in highway construction. Not only the 'one-stop' free-pollution disposal and use are achieved, but also the performance is improved with prolonging the service life of the road. The dissertation studies the rubber asphalt modification mechanism, and studies the effect of different rubber powder content, different rubber powder fineness, different kinds of matrix asphalt and different process on rubber modified asphalt through a lot of indoor test. Moreover, in this dissertation the field processing method of rubber modified asphalt is proposed according to the test results and the practical engineering By microwave radiation and activator accession the rubber powder is surface activation treated. Microwave radiation and principle of activator is studied and the effect of different microwave heating time, different microwave firepower and different activator content on rubber asphalt performance through the experiments. Then, rubber modified asphalt is compared with the rubber asphalt without activation treatment. As a result, the performance of rubber modified asphalt treated by microwave radiation and activator processing is improved. In this study, the rubber asphalt is prepared using the test program. The target gradation is determined according to the OGFC mixture design experience. In the target gradation, the road performance tests of OGFC-13 mixture are carried out, comparing with asphalt mixture and SBS modified asphalt mixture. The test results shows that the high-temperature performance, low temperature performance and water stability of rubber asphalt mixture of OGFC are improved, and rubber aspha

关 键 词： 橡胶沥青 加工工艺 橡胶粉活化 微波辐射

领　　域： [交通运输工程]