摘要
在国内首次基于GTM力学设计方法进行橡胶沥青混合料的配合比设计,通过对连续级配和4.75 mm通过率不同的3种间断级配进行系统研究,获得适于GTM旋转成型方式的优化级配形式。该设计过程不考虑试件的体积参数,仅根据旋转稳定系数(GSI)和旋转安全系数(GSF),综合确定各级配下的最佳沥青用量。并通过综合对比各级配的路用性能,认为GTM设计方法更适合于连续密级配的橡胶沥青混合料的设计,且其综合性能优于间断级配的混合料。
In order to research the gradations of the rubber - asphalt mixtures, it is the first time to use GTM method for mixing ratio design of rubber - asphalt mixtures in domestic. Based on this method, research on the continuous - graded and three kinds of gap - graded mixtures with different through rate of 4. 75mm were conducted systematically. Without considering the volume parameters, and the optimum asphalt content were identified only according to the the physical parameters GSI, GSF. Through comprehensive evaluation on the road performance of different gradings, it is effectivly that the GTM design method is more ap- propriate to the continuous -graded rubber- asphalt mixtures, and designed by which, the road performance is better than the gap -graded mixtures.
出处
《石油沥青》
2009年第2期33-37,共5页
Petroleum Asphalt
关键词
橡胶沥青混合料
GTM
力学设计
性能
Rubber - asphalt mixture
GTM
Mechanical design
Performance.
