摘要
为了优化热再生沥青混合料配合比设计,利用了流变学试验原理和美国SHRP试验方法,从中引入车辙因子、疲劳因子、低温蠕变速率对4种新旧沥青掺配比例的再生沥青高温性能、疲劳性能和低温性能进行评价和分析,在兼顾高低温性能的情况下得到旧沥青、再生剂和新沥青的最佳掺配比例,进而得出热再生沥青混合料旧料掺量的最佳掺配比例;同时对旧料进行热再生沥青混合料配合比设计及其路用性能试验,与普通沥青混合料路用性能对比分析,证明热再生沥青混合料旧料掺量的最佳掺配比例设计方法的合理性。基于流变学原理对几种新旧沥青掺配比例的再生沥青进行对比分析,得到最佳再生沥青掺配比例,并用于指导热再生沥青混合料旧料掺量以及配合比设计。
In order to optimize the design of hot recycled asphalt mixture＇s mix proportion, by using the rheological test principle and United States SHRP test methods, in which the parameters including rutting factor, the fatigue factor, low creep rate are introduced to evaluate and analyze the high-temperature performance, fatigue performance and low-temperature performance of recycled asphalts with 4 new and old asphalt blending ratios. Considering both high and low temperature performances, the optimum blending ratio of old asphalt, recycling agent and new asphalt is obtained, and then the best blending ratio of old material content for hot recycled asphalt mixture is obtained. Furthermore, the mix proportion of the old material in hot recycled asphalt mixture is designed and the road performance test is conducted. Comparing with the pavement performance of ordinary asphalt mixture, it is proved that the best blending ratio of the old asphalt mixture material content for hot recycled asphalt mixture is reasonable. Therefore, based on rheological principle, the recycled asphalt mixtures with abovementioned blending proportions are comparatively analysed, and the best blending ratio for recycled asphalt, which could guide the design of old material content and mix proportion of hot recycled asphalt mixture.
出处
《公路交通科技》
CAS
CSCD
北大核心
2016年第3期24-30,共7页
Journal of Highway and Transportation Research and Development
关键词
道路工程
最佳掺配比例
流变学原理
再生沥青
旧料掺量
road engineering
optimum blending ratio
rheological principle
regenerated asphalt
old material blending ratio
