A New Approach for Determining Rubber Enveloping on Pavement and Its Implications for Friction Estimation

• Published in: Coatings (Basel) 2024-03, Vol.14 (3), p.301
• Main Authors: Yun, Di, Tang, Cheng, Sandberg, Ulf, Ran, Maoping, Zhou, Xinglin, Gao, Jie, Hu, Liqun
• Format: Article
• Language: English
• Subjects: Analysis; bearing area curve; contact area; enveloping; Friction; friction coefficient; Methods; Morphology; Parameters; pavement texture; Pavements; Pressure distribution; Rubber; rubber penetration depth; Texture; Tires
• ISSN: 2079-6412; 2079-6412
• DOI: 10.3390/coatings14030301

The depth to which the pavement texture is enveloped by the tire tread rubber (d) is an important parameter related to contact performance. This study presents a new method (S-BAC), which relies on the ratio between the real contact area and the nominal tire-pavement contact area (S) and the bearing area curve (BAC), to measure the depth on pavements. The tire-pavement contact was simulated by contact between a non-patterned rubber block and pavement specimens. After analyzing the affecting factors, the new method was compared with previous methods by the d values and the application on the relationship between pavement texture parameters and friction. The results reveal that though there is a linear regression between the d obtained with the S-BAC and previous methods, the d values obtained with different methods differ. Applying the S-BAC method can strengthen the relationship between texture parameters and friction more than other methods.