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摘要
为研究超薄罩面(Ultra-Thin Overlay,UTO)耐久性能的衰变规律,采用传统抗滑指标与激光扫描、数字图像处理相结合的方法,通过路面加速加载试验设备对不同高黏沥青制备的超薄罩面试件展开测试。结果表明:在100万次的加载试验期间,3种超薄罩面试件的摆值和平均构造深度均呈现“先快速下降、后逐渐稳定”的变化趋势;在同一级配下,高黏改性沥青60 ℃动力黏度越大,由其制备的超薄罩面耐久性越好;相较于 UTO-B和 UTO-C,UTO-A 的磨耗面积比更小,耐磨耗性能更强;磨耗面积比与摆值、平均构造深度的多项式拟合相关系数均大于0.85,相关性良好。该结论可为超薄罩面抗滑与磨耗性能评价指标的完善与发展提供一定支持和参考。
Abstract
To study the decay pattern of the durability performance of Ultra-Thin Overlay (UTO), a method combining traditional skid resistance indicators with laser scanning and digital image processing was employed to test Ultra-Thin Overlay specimens prepared with different high-viscosity asphalt using accelerated loading pavement test equipment. The results indicate that during one million loading cycles, all three types of Ultra-Thin Overlay specimens exhibit a trend in both BPN and MTD characterized by an initial rapid decline followed by gradual stabilization. At the same gradation, the higher the dynamic viscosity of high-viscosity modified asphalt at 60 ℃, the better the durability of Ultra-Thin Overlay prepared from it. Compared to UTO-B and UTO-C, UTO-A exhibits a smaller wear area ratio and stronger wear resistance. The polynomial fitting correlation coefficients between wear area ratio and BPN as well as MTD are all greater than 0.85, demonstrating good correlation. These findings can provide support and reference for the improvement and development of skid resistance and wear performance evaluation indicators for Ultra-Thin Overlay.
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路斌,段丹军,张帅,裴强.
基于加速加载试验的超薄罩面耐久性能研究[J].
石家庄铁道大学学报(自然科学版), 2026, 39(2): 66-72 DOI:10.13319/j.cnki.sjztddxxbzrb.20260055
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基金资助
山西省科技重大专项计划项目(202201090301014)
山西省基础研究计划联合资助项目(202503011222007)
山西省青年科学研究项目(202303021222388)
山西交通控股集团有限公司科技创新项目(24-JKKJ-6)