Enhancing anti-rutting performance of asphalt pavement by dispersing shear stresses within asphalt layers

被引：9

作者：

Liao, Gongyun ^{[1
]}

Wang, Shengyue ^{[1
]}

Shi, Qin ^{[1
]}

机构：

[1] Southeast Univ, Sch Transportat, Nanjing, Jiangsu, Peoples R China

来源：

ROAD MATERIALS AND PAVEMENT DESIGN | 2018年 / 19卷 / 02期

关键词：

nail; shear stress; rutting; Hamburg wheel-tracking test; finite element method; asphalt pavement; PERMANENT DEFORMATION; LABORATORY EVALUATION; MIXTURES; CONCRETE; RESISTANCE; AGGREGATE; BEHAVIOR; FATIGUE; MIXES;

D O I：

10.1080/14680629.2016.1253494

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Rutting of asphalt pavement still has not been solved. The main objective of this paper was to propose nail-reinforced asphalt pavement capable of dispersing shear stresses within asphalt layers and enhancing anti-rutting performance and to recommend reasonable nail configurations for future practice. Reinforced slabs with different nail configurations were fabricated. Their anti-rutting performance was demonstrated by Hamburg wheel-tracking test and capacities of shear stress dispersion were verified by finite element method. Anti-rutting performance of nail-reinforced asphalt pavements with different nail configurations was simulated and reasonable nail configurations were recommended. The results showed that rut depth developed on the slabs reinforced with square-pattern nails after 20,000 load cycles was only 64.3% of that on the control slab, and it originated from that installed nails reduced shear stresses within asphalt layers efficiently. To enhance anti-rutting performance of asphalt pavement, nail configurations (nail length > 4 cm, nail spacing < 10 cm, square pattern) were preferred. The proposed nail-reinforced asphalt pavement was expected to be applied in heavy-duty freeways and urban intersections.

引用

页码：453 / 469

页数：17

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