摘要
采用浸水车辙试验和冻融劈裂试验分别评价了Type-B（美国级配）、改良型SMA-10、OGFC-10这3种级配和SBS改性沥青、普通沥青＋8%抗车辙剂和高黏弹沥青3种结合料组成的9种超薄层沥青混合料的水稳定性。试验结果表明：有5种超薄层沥青混合料,即Type-B SBS改性沥青混合料、改良型SMA-10 SBS改性沥青混合料、Type-B高黏弹沥青混合料、改良型SMA-10高黏弹沥青和OGFC-10高黏弹沥青混合料满足现有规范对水稳定性的要求,其中改良型SMA-10高黏弹沥青混合料的综合性能最优,其条件前后的车辙动稳定度不仅分别是其他8种混合料的2.0～4.5倍和2.0～4.7倍。推荐该混合料用于重要的城市主干道、高速公路或重交通道路路面的预防性养护或维修。
By performing immersion rutting test and freeze-thaw splitting test,the water stability of nine different asphalt mixtures for ultra-thin surfacing layer was studied. The said nine asphalt mixtures were made respectively by three gradations（ namely Type-B with USA gradation,improved SMA-10 and OGFC-10） and with three binders（ namely SBS modified asphalt,common asphalt ＋ 8% anti-rutting agent and highly viscoelastic asphalt）. The test results show that five types of asphalt mixture for ultra-thin surfacing layer（ namely Type-B SBS modified asphalt mixture,improved SMA-10 SBS modified asphalt mixture,Type-B highly viscoelastic asphalt mixture,improved SMA-10 highly viscoelastic asphalt mixture and OGFC-10 highly viscoelastic asphalt mixture） meet China＇s prevailing specification for water stability of asphalt mixtures. Among them the improved SMA-10 highly viscoelastic asphalt mixture demonstrated optimal general performance with both rut dynamic stability and the immersion rutting dynamic stability 2. 0 ～ 4. 5 times and 2. 0 ～ 4. 7 times that of other eight mixtures and is thus recommended for use in pavement protective maintenance or repair of key urban artery,expressway or road of heavy traffic.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2016年第2期40-44,共5页
Journal of Chongqing Jiaotong University(Natural Science)
关键词
道路工程
超薄层沥青混合料
水稳定性
浸水车辙试验
冻融劈裂试验
road engineering
ultra-thin layer asphalt mixture
water stability
water immersion rutting test
freeze-thaw splitting test
