| 引用本文: | 李强,马翔,李珂,赵康.沥青玛蹄脂碎石混合料抗油蚀性能试验研究[J].建筑材料学报,2020,23(3):664-670 |
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| 沥青玛蹄脂碎石混合料抗油蚀性能试验研究 |
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李强, 马翔, 李珂, 赵康
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南京林业大学土木工程学院,江苏南京210037
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| 摘要: |
| 采用室内性能试验，对5种沥青玛蹄脂碎石（SMA）混合料的抗油蚀性能进行了评价，分析了沥青类型、抗油蚀剂掺量、浸油时间等因素对其力学性能和路用性能的影响，通过扫描电子显微镜（SEM）和傅里叶转换红外光谱（FTIR）研究了沥青油蚀的作用机理.结果表明：发生油蚀破坏后，普通沥青混合料各项性能的下降幅度最大；SBS改性沥青混合料在短时间内具有一定的“油蚀保护”作用，但是经过长时间油蚀后,其保护作用逐渐失效；掺加抗油蚀剂的沥青混合料能够一直保持足够的力学性能和路用性能，其抗油蚀剂最佳掺量为沥青混合料质量的0.4%；浸油后抗油蚀沥青混合料表面呈现薄层状平面结构，沥青膜裹附完整，表现出良好的黏附性和整体性；掺加抗油蚀剂可以有效地避免沥青成分中强极性芳香族化合物的油蚀损失. |
| 关键词: 道路工程 沥青玛蹄脂碎石 浊度 路用性能 油蚀机理 |
| DOI：10.3969/j.issn.1007 9629.2020.03.025 |
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| 基金项目:江苏省基础研究计划(自然科学基金)资助项目(BK20181404)；江苏高校“青蓝工程”资助项目(苏教师(2016)15号)；南京林业大学“青年骨干教师培养对象”资助项目(2017年) |
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| Experiment on Anti fuel Oil Corrosion Performance of Stone Mastic Asphalt Mixtures |
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LI Qiang, MA Xiang, LI Ke, ZHAO Kang
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College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
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| Abstract: |
| The anti fuel oil corrosion performance of five types of stone mastic asphalt(SMA) mixtures was evaluated by laboratory tests. Effects of binder types, anti fuel oil corrosion additive contents, and oil corrosion time on the mechanical and pavement performance were investigated. The oil corrosion mechanism was discovered by the scanning electron microscopy（SEM） and Fourier infrared spectroscopy（FTIR）. It is observed that the mixture with the unmodified binder has the maximum reduction in the performance after oil corrosion. The SBS modified binder protects the mixture from oil corrosion in a short time. However, it no longer has any effect after a long time. The mixture with the anti fuel oil corrosion additive can always keep adequate mechanical strength and pavement performance. The optimum content of the additive is 04% of the mixture mass. It has the surface with lamellar quasi flat structures after oil corrosion. Asphalt films are fully retained, indicating the good adhesion capacity and integrity of asphalt mixtures. Adding the additive to the binder can effectively avoid losses of strongly polar aromatic compounds generated from oil corrosion. |
| Key words: pavement engineering stone mastic asphalt(SMA) turbidity pavement performance oil corrosion mechanism |
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