To characterize the evolution of the skid resistance and texture parameters of SMA-13 mixtures with different material compositions under ultraviolet radiation (UV) and a high load (1.0 MPa), three SMA-13 mixtures were prepared and subjected to testing: SBS-modified asphalt with natural aggregates (A), SBS-modified asphalt with steel slag aggregates (B), and high-modulus asphalt with natural aggregates (C). Using a dual-wheel abrasion tester, the mixtures were subjected to wear tests before and after UV aging. The British pendulum number (BPN) and texture parameters were measured at different wear durations. The results demonstrate that with increasing wear duration, the BPN of all three mixtures exhibits a non-monotonic trend, characterized by a distinct three-stage evolution pattern. Consequently, an evaluation index system for skid resistance was proposed, comprising the mean and maximum BPN values in stage 2, the BPN decay rate in stage 3, and the BPN at the maximum wear duration. Compared to mixtures A and C, mixture B exhibits enhanced skid resistance following UV aging, as evidenced by significantly higher mean and maximum BPN values in stage 2 and an increase in the BPN at the maximum wear duration. Furthermore, the decay rates in the three stages decreases by 50% and 67%, respectively, indicating reduced aging sensitivity and superior wear resistance. Following UV aging, the initial mean profile depth (MPD) of mixtures A and B decreases significantly, with MPD degradation rates in stage 3 of 0.50 mm/h and 0.15 mm/h, respectively. These findings confirm that UV aging is a critical factor in texture degradation, and the steel slag mixture (B) demonstrating a significantly lower degradation rate. Correlation analysis revealed high coefficients of determination (R2) between MPD and BPN of 0.87 and 0.94 for mixtures A and B, respectively, indicating a strong correlation. Therefore, research on pavement skid resistance restoration technology based on the concept of texture reconstruction is justified.
WANG Ming, ZOU Ling-yun, YU Xiao-qing, HUANG Rui-qing, SUN Yang.
Skid Performance and Texture Parameter Evolution Law of SMA-13 Mixture under Action of Ultraviolet Aging[J].
Science Technology and Engineering, 2026, 26(17): 7461-7469 DOI:10.12404/j.issn.1671-1815.2504657
综上,利用激光纹理扫描技术快速获取纹理参数,预期可实现纹理检测与抗滑性能评估的一体化。通过定期的纹理扫描并结合少量 BPN 校准,即可实现对大范围路面抗滑状态的快速诊断和退化趋势预判。基于本文研究成果,混合料 B在长期服役条件下具有更好的纹理特征形态和优异的抗滑耐久性,适用于强日照、重载工况下的高等级公路。相比之下,混合料 A 和 C 的抗滑衰减更为明显,更适合作为交通较低或紫外辐射较弱运维环境的候选材料。
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