摘要
为量化分析NovaChip超薄磨耗层对沥青混合料性能提升效果,采用复合试件进行试验。通过15℃的小梁弯曲试验、三点弯曲疲劳试验和改进的车辙试验,分别对不同黏层油洒布量下复合试件的抗弯拉性能、疲劳性能、浸水后高温稳定性及抗松散性能进行了分析。研究结果表明:加铺NovaChip超薄磨耗层后,复合试件的破坏荷载提升了36.4%~82.5%,不同应力水平下的复合试件的疲劳寿命也有了明显提升,动稳定度提升了约10%。黏层油洒布量与复合试件承载性能、疲劳寿命以及改进车辙试件的松散率之间的曲线关系为下开口式抛物线。综合考虑,推荐黏层油洒布量为0.8~1.0kg/m^(2)。
To quantify the improvement effect of NovaChip ultra-thin abrasive layer on asphalt mixture,composite specimens were prepared.Flexure-tension resistant performance,fatigue performance,high-temperature stability after water immersion,and anti-loosening performance were evaluated using three tests including the small beam bending test at 15℃,three-point bending fatigue test,and modified rutting test.The results showed that after adding NovaChip ultra-thin abrasive layer,the damage load of composite specimens was increased by 36.4%~82.5%.The fatigue life was increased significantly under different stress levels.The dynamic stability was increased by about 10%.Furthermore,the amount of sticky layer spreading showed a quadratic curve variation with the bearing performance,fatigue life,and loosening rate of improved rutting specimens.In summary,the recommended amount of sticky layer spreading was 0.8~1.0 kg/m^(2).
作者
孙栖梧
SUN Qiwu(Hunan High-speed Design Consulting&Research Institute Co.,Ltd.,Changsha 410076,China)
出处
《交通科学与工程》
2023年第5期84-90,共7页
Journal of Transport Science and Engineering
关键词
NOVACHIP超薄磨耗层
抗弯拉性能
疲劳性能
抗松散
黏层
NovaChip ultra-thin abrasion layer
flexure-tension resistant performance
fatigue performance
anti-loosening
adhesive layer
