基于纹理特征的钢渣沥青路面抗滑性能测试与评价

Testing and Evaluation for Anti-skid Performance of Steel SlagAsphalt Pavement Based on Texture Features

沥青路面的抗滑性能快速下降一直是各国学者高度关注的问题。随着表面纹理逐渐磨损,沥青路面的抗滑性能也持续减弱。为了能更科学地评估和预测路面抗滑性能的衰减,有必要定量地建立起路面纹理和抗滑性能之间的关系。本研究采用了小型加速加载设备、高精度三维扫描设备以及数字图像处理来模拟路面纹理的磨损过程。本研究基于三维纹理特征系统评价了沥青路面的抗滑性能衰减。研究结果显示,英国摆值(BPN)与本研究采用的评价指标三维纹理参数(Sq、Ssk、Vmp、Vmc和Vvc)之间存在着紧密的联系。随着加载次数的增加,BPN和三维纹理参数都呈现出相同的衰减趋势。这些三维纹理参数不仅可以作为评估沥青路面抗滑性能的指标,还能精确地描绘钢渣沥青路面的微观磨损机制。本研究建立的关系将有助于预测路面的抗滑衰减情况,为钢渣沥青路面的路用性能研究提供了有力的技术支持。

The rapid decline in the skid resistance of asphalt pavements has always been a problem of high concern among scholars worldwide.As the surface texture wears down over time,the skid resistance of asphalt pavements continues to weaken.To more scientifically assess and predict the deterioration of pavement skid resistance,it is necessary to quantitatively establish the relationship between surface texture and skid resistance.This study utilized a small-scale accelerated loading device,high-precision three-dimensional scanning equipment,and digital image processing to simulate the wear process of pavement texture.This study systematically evaluated the deterioration of skid resistance of asphalt pavements based on 3D-texture feature systems.The results show that there is a close relationship between the British Pendulum Number(BPN)and the 3D-texture parameters(S q,S sk,V mp,V mc,and V vc)used in this study.With an increase in loading cycles,both BPN and 3D-texture parameters exhibited the same trend of decay.These 3D-texture parameters can not only serve as indicators for assessing the skid resistance of asphalt pavements but also accurately describe the micro-wear mechanism of steel slag asphalt pavements.The relationship established in this study will aid in predicting the deterioration of pavement skid resistance,providing strong technical support for the study of the road performance of steel slag asphalt pavements.