4.7 Article

Testing and evaluation for long-term skid resistance of asphalt pavement composite seal using texture characteristics

Journal

CONSTRUCTION AND BUILDING MATERIALS
Volume 356, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2022.129241

Keywords

Chip seal; Composite seal; 3D texture characteristics; Skid resistance; Wear testing

Funding

  1. National Key Research and Devel- opment Program of China
  2. National Natural Science Foundation of China
  3. Shaanxi Province Special Funds for Technological Innovation
  4. [2018YFE0120200]
  5. [2021YFB2601000]
  6. [52108395]
  7. [52178409]
  8. [2021JQ-254]

Ask authors/readers for more resources

This study investigated the skid resistance performance of four seal schemes and established the relationship between texture characteristic parameters and skid resistance index, as well as proposed a prediction model for skid resistance deterioration. The composite seal structure can reduce the rate of skid resistance index decrease, and parameters such as Spd, Spc, and Vmc showed good correlation with skid resistance.
As a common means to improve the skid resistance of asphalt pavement, chip seal is widely used for road surface treatment and preventive maintenance. As the aggregate is progressively dislodged under repeated wheel loads, continuous loss of the surface texture characteristics occurs, and its skid resistance increasingly declines. Therefore, it is necessary to further refine the process of chip seal. In addition, in order to scientifically evaluate its performance and accurately predict the deterioration, the relationship between the surface texture charac-teristics and the skid resistance needs to be quantitatively established. In this paper, a composite seal structure was proposed by applying sand-containing fog seal layer on top of chip seal. Firstly, four seal schemes (i.e., 3-5 mm chip seal, 5-9.5 mm chip seal, 3-5 mm composite seal and 5-9.5 mm composite seal) were designed and loaded by a four-wheel rotary accelerated abrader. Secondly, the skid resistance indexes of each scheme were investigated under different abrasion times using pendulum meter and sand patch method. In this process, the three-dimensional texture characteristic parameters (i.e., Ssk, Spd, Spc, Vmp and Vmc) of the specimen surface were also obtained by laser scanning. Finally, by analyzing the data, the relationship between the seal texture char-acteristic parameter and the skid resistance index was established, and the decay law prediction model of the skid resistance for four seal schemes was derived. It is found that the pendulum value and texture depth of the seal decreased with the increase of abrasion times, but the composite chip seal can reduce the decreasing rate of skid resistance index. Sq, Spd, Spc and Vmc showed good synergistic decay laws with the British pendulum number (BPN) and mean texture depth (MTD), among which Spc had the best correlation and can be used as an parameter to characterize the skid resistance of the seal. The relationship and decay prediction model established in this paper can be used to characterize the skid resistance of chip seal and predict the decay law of the skid resistance.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available