Luo Yi, Xu Yongli, Li Yiming, Wang Liming, Wang Hongguang
College of Civil Engineering and Transportation, Northeast Forestry University, Harbin 150040, China.
College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China.
Materials (Basel). 2025 Mar 7;18(6):1204. doi: 10.3390/ma18061204.
Asphalt pavement skid resistance, governed by surface texture, is critical for traffic safety. Most research has focused on full-depth textural characteristics, often overlooking the depth of tire-pavement contact under real traffic conditions. This study introduces the concept of the Effective Depth of Skid Resistance (EDSR) to describe the effective depth of tire-asphalt contact, improving skid resistance assessment accuracy. Using blue linear laser scanning, surface textures of three common asphalt pavements with wearing courses-AC-13, AC-16, and SMA-13-were analyzed, and friction coefficients were measured using a British pendulum. After pre-processing three-dimensional texture data, fractal dimensions at various depths were calculated using the box-counting method and correlated with the friction coefficients. Previous studies show an insignificant correlation between full-depth asphalt pavement textures and skid resistance. However, this study found a significant positive correlation between skid resistance and pavement textures at specific depths or the EDSR. A depth with a correlation exceeding 0.9 was defined as the EDSR. Linear formulas were established for each pavement type within these EDSR ranges. A theoretical model was developed for predicting skid resistance, showing an over 80% accuracy against real-world data, indicating its potential for improving road surface performance detection.
受表面纹理影响的沥青路面防滑性能对交通安全至关重要。大多数研究都集中在全深度纹理特征上，往往忽略了实际交通条件下轮胎与路面接触的深度。本研究引入了防滑有效深度（EDSR）的概念来描述轮胎与沥青接触的有效深度，提高防滑性能评估的准确性。使用蓝色线性激光扫描，分析了三种常见的有磨耗层的沥青路面——AC-13、AC-16和SMA-13的表面纹理，并使用英国摆锤测量了摩擦系数。在对三维纹理数据进行预处理后，使用盒计数法计算了不同深度的分形维数，并将其与摩擦系数相关联。以往的研究表明全深度沥青路面纹理与防滑性能之间的相关性不显著。然而，本研究发现防滑性能与特定深度或EDSR处的路面纹理之间存在显著的正相关。相关性超过0.9的深度被定义为EDSR。在这些EDSR范围内为每种路面类型建立了线性公式。开发了一个用于预测防滑性能的理论模型，该模型对实际数据的预测准确率超过80%，表明其在改善路面性能检测方面的潜力。
