【作者】 贺炜；

【导师】 韩森；

【作者基本信息】 长安大学 ， 道路与铁道工程， 2008， 硕士

【摘要】 随着我国高速公路的迅猛发展,沥青路面得到了广泛的应用。伴随交通荷载的增加,使用要求的提高,沥青路面也出现了很多问题。沥青混合料采用现行规范马歇尔设计方法,难以应对沥青路面出现的早期病害,而Superpave设计方法在我国推广缓慢,对其也存在很多争议。因此对于沥青混合料设计方法的研究具有重要的现实意义。论文通过回顾级配理论,深入分析Superpave级配技术规范,并应用分形理论计算出Superpave级配范围,以利于矿料级配设计工作。通过科学预估初始沥青用量,并结合Superpave方法,对级配的筛选具有指导作用。论文针对同一材料和级配,分别应用马歇尔方法和Superpave方法进行混合料设计,从最佳沥青用量、设计体积指标、压实功等方面深入比较分析了两种方法的异同。通过统计分析得出混合料类型是影响两种方法确定的最佳油石比差异的主要因素,针对AC混合料对两种方法确定的最佳油石比进行了线性回归,得出二元方程,对最佳沥青用量的确定具有参考意义。通过进行混合料使用性能试验研究,提出因地制宜,针对不同的使用要求采用不同的混合料设计方法。通过开展上述研究,论文从原材料选择、级配设计、最佳沥青用量确定及使用性能检验等方面比较分析两种设计方法并吸取两者的优点,提出基于传统马歇尔方法,同时结合Superpave方法的PSM设计方法,达到设计具有优良路用性能的沥青混合料的目的。更多还原

【Abstract】 With the rapid development of highway construction, the application of asphalt pavement is very extensive in China. But because of increasing of traffic load and operating requirements, asphalt pavement construction faces many problems. Marshall design method in applicable codes can’t solve the early damage of asphalt pavement structure. Meanwhile, many problems of Superpave design method haven’t reached consensus, and isn’t applied widely. So the designing method of the asphalt mixture should be researched more deeply.By reviewing gradation theory, this paper analyses the Superpave design method thoroughly. The gradation scope of Superpave design method is acquired, which is beneficial to improve gradation design. Based on estimating initial asphalt binder content and combining with Superpave method, it becomes much easier to design gradation. Using Marshall and Superpave methods respectively, the asphalt mixture of the same material is designed. Several indexes are compared, such as asphalt content, designing volume indexes, compacting power..Types of Asphalt mixture have the greatest influence on the optimum asphalt content designed by two methods through statistic analysis. The linear regression to ensure the optimal asphalt content is made on AC mixture, and the binary equations are acquires. it is beneficial to determine the asphalt content. Based on the performance test of asphalt mixture, different design method of asphalt mixture is proposed to different demand.Two design methods are compared on raw material selection, grading design, ensuring optimal asphalt content, performance, and so on, Borrowing ideas form their advantages the PSM method is proposed in order to design asphalt mixture with excellent performance.更多还原