@article{ref1,
title="Tire-road contact area on asphalt concrete pavement and its relationship with the skid resistance",
journal="Materials (Basel, Switzerland)",
year="2020",
author="Yun, Di and Hu, Liqun and Tang, Cheng",
volume="13",
number="3",
pages="e615-e615",
abstract="Sufficient pavement skid resistance is one of the essential factors to ensure traffic safety. The real contact area (<i>A</i>r) between the tire and road is significant for understanding and improving the skid resistance performance. In this study, the tire-road contact area is measured by squeezing a smooth underside-dyed rubber block into the specimens, using a self-designed fixture mounted on the universal test machine. The three-dimensional (3D) printing technology is used to separate the specimens with multi-scale roughness. Surface texture on 29 AC pavements is obtained by a 3D scanner and qualified by the root-mean-square surface height (<i>S</i>q), to investigate the impact of pavement texture on the <i>A</i>r. The skid resistance on 23 AC road sections is measured using the T2GO system, and the pavement texture is recorded, to discuss the influence of the <i>A</i>r on the skid resistance. The results indicate that the multi-scale roughness rarely affects the measured contact area once the concerned wavelength is less than 0.6 mm. The <i>A</i>r decreases with the <i>S</i>q following a power function but has weak correlation with the friction coefficient. This study could provide an in-depth understanding of the tire-road contact and lays a foundation for optimizing the contact-related pavement performance.<p /> <p>Language: en</p>",
language="en",
issn="1996-1944",
doi="10.3390/ma13030615",
url="http://dx.doi.org/10.3390/ma13030615"
}