| 袁添笑,段盛瀚,李 波,聂文强,於亚辉.热再生SMA沥青混合料抗滑性能试验
研究*[J].水泥工程,2026,39(3):60-63 |
| 热再生SMA沥青混合料抗滑性能试验
研究* |
| Experimental study on skid resistance of hot in-place recycled SMA asphalt mixture |
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| DOI： |
| 中文关键词: 热再生SMA 抗滑性能 磨光值 构造深度 加速磨耗 玄武岩纤维 |
| 英文关键词: hot in-place recycled SMA skid resistance polished stone value texture depth accelerated abrasion basalt fiber |
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| 中文摘要: |
| 为评价高掺量RAP热再生SMA沥青混合料的抗滑性能，本文以粗集料岩性、级配类型及强韧化玄武岩纤维为变量设计了9组车辙板试件，系统测试了粗集料磨光值和车辙板构造深度，并依托自主研发的室内路面模拟磨光试验机开展加速磨耗试验，测定了不同磨耗阶段的摆式摩擦系数。结果表明：辉绿岩、钢渣等硬质集料的抗磨光能力明显优于玄武岩和石灰岩；级配类型对构造深度的影响最为显著，粗级配较细级配提升49.5%；磨耗过程中摆值呈现“短期上升—快速衰减—趋于稳定”的三阶段演化规律，采用粗级配辉绿岩并掺入玄武岩纤维的综合优异组在5万次磨耗后摆值仍保持在65.5，较空白组提升12.5%，展现出最佳的抗滑耐久性。 |
| 英文摘要: |
| To evaluate the skid resistance of hot in-place recycled SMA asphalt mixture with high RAP content, nine groups of rutting slab specimens were designed in this study using coarse aggregate lithology, gradation type and toughened basalt fiber as variables. The polished stone value of coarse aggregate and the texture depth of the slabs were systematically measured, and accelerated abrasion tests were carried out on a self-developed indoor pavement polishing simulator to determine the British Pendulum Number (BPN) at different abrasion stages. The results show that hard aggregates such as diabase and steel slag exhibit significantly better anti-polishing performance than basalt and limestone; gradation type has the most significant effect on texture depth, with the coarse gradation achieving a 49.5% increase over the fine gradation; during abrasion, the BPN evolves in three stages of “short-term rise—rapid decay—gradual stabilization”. The comprehensive optimized group using coarse-graded diabase with basalt fiber still maintained a BPN of 65.5 after 50 000 abrasion cycles, 12.5% higher than the control group, demonstrating the best long-term skid resistance durability. |
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