湿度-尾气共同作用对沥青混合料抗滑性能的影响
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作者:
作者单位:

1.河海大学 土木与交通学院,江苏 南京 210024;2.南京雨花建设发展有限公司,江苏 南京 210012;3.华设设计集团股份有限公司,江苏 南京 210007

作者简介:

吴建涛(1981—),男,副教授,工学博士,研究方向为沥青材料性能及耐久性。 E-mail: jiantao.wu@hhu.edu.cn

中图分类号:

U418.6

基金项目:

国家自然科学基金面上项目(52078190);中央高校基本科研业务费专项资金项目(B210202043)


Effect of Humidity-tail Gas Combined Action on Skid-resistance Performance of Asphalt Mixture
Author:
Affiliation:

1.College of Civil and Transportation Engineering, Hohai University, Nanjing 210024, China;2.Nanjing Yuhua Construction Development Co. Ltd., Nanjing 210012, China;3.China Design Group Company Limited, Nanjing 210007, China

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    摘要:

    基于尾气排放在隧道沥青路面表面形成油膜进而导致路面抗滑性能快速衰减的工程背景,探究了湿度-尾气共同作用下沥青混合料抗滑性能的衰减规律及尾气油膜的形成机理。采用恒温恒湿养护箱及自制尾气处理系统对三种沥青混合料车辙板试件进行了不同湿度-尾气组合作用的模拟,并测试试件摆值用于表征试件的抗滑性能。除此之外,对有水(无水)尾气-沥青界面进行了分子动力学模拟,用以探究尾气油膜形成的微观机理。结果表明,在相对干燥和完全潮湿条件下,随着尾气处理时间的增长三种沥青混合料试件摆值呈现线性下降趋势,完全潮湿条件下尾气处理1h后OGFC混合料抗滑性能衰减幅度较其余两种混合料低近30%,OGFC混合料具有优异的抗滑性,并且在湿度-尾气共同作用下还具有良好的抗滑耐久性。尾气油膜导致的沥青混合料抗滑性能衰减难以自然消散且具有累积效应,是导致沥青混合料抗滑性能快速衰减的主要原因。尾气油膜主要形成在尾气排放后冷却的过程中,水分子主要存在于尾气分子附近0~5?范围内填充尾气分子间空隙,其自身较强的极性能够吸引尾气分子并有助于尾气在沥青分子表面的吸附。

    Abstract:

    Based on the engineering background that the vehicle exhaust emission forms oil film on the surface of tunnel asphalt pavement, which leads to the rapid attenuation of pavement skid-resistance performance, the attenuation law of asphalt mixture skid-resistance performance under the combined action of humidity and tail gas and the formation mechanism of tail gas oil film are explored. Using constant temperature and humidity curing box and self-made exhaust gas treatment system, the combined effect of different humidity and tail gas on three kinds of asphalt mixture rut plate specimens was simulated, and the British pendulum number (BPN) was used to characterize the skid-resistance performance of the specimens. In addition, molecular dynamics simulation was carried out on the water (anhydrous) tail gas - asphalt interface to explore the micro mechanism of tail gas oil film formation. The results show that the British pendulum number of three asphalt mixtures shows a linear downward trend with the increase of tail gas treatment time under relatively dry and completely moist conditions. After tail gas treatment for 1h under completely moist conditions, the attenuation range of skid-resistance performance of OGFC mixture is nearly 30% lower than that of the other two mixtures. OGFC mixture has better skid-resistance performance, and has good skid-resistance durability under the combined action of humidity and tail gas. The skid-resistance performance of asphalt mixture caused by tail gas oil film is difficult to dissipate naturally and has cumulative effect. Tail gas oil film is the main reason for the rapid attenuation of skid-resistance performance of asphalt mixtures. The tail gas oil film is mainly formed in the process of cooling after the tail gas is discharged. Water molecules mainly exist in the range of 0~5 ? near the tail gas molecules, filling the gap between tail gas molecules. Its strong polarity can attract tail gas molecules and contribute to the adsorption of tail gas on the surface of asphalt molecules.

    参考文献
    [1] 满新耀, 王强林, 吴迪. MRS在桂柳高速公路隧道路面防滑改造中的应用[J]. 中外公路, 2019, 39(4): 196.
    [2] 倪娜, 杨少伟, 潘兵宏, 等. 终南山公路隧道交通事故特征及预防措施研究[J]. 现代隧道技术, 2018, 55(4): 25.
    [3] MATAEI B, ZAKERI H , ZAHEDI M , et al. Pavement friction and skid resistance measurement methods: a literature review[J]. Open Journal of Civil Engineering, 2016, 6(4): 537.
    [4] 郭宏浩, 时小群. 越江盾构隧道沥青路面抗滑性能研究[J]. 建筑机械, 2020(11): 72.
    [5] 尚婷, 唐伯明, 田诗涵. 山区高桥隧比隧道段路面抗滑性能分析[J]. 科学技术与工程, 2018, 18(29): 239.
    [6] 蔡正森, 黄传武, 许新权, 等. 公路隧道不同纹理路面服役状况调查[J]. 土木工程与管理学报, 2020, 37(3): 103.
    [7] 陈小兵, 王俊天, 刘晗, 等. 降雨对沥青路面抗滑性能和行车安全的影响(英文)[J]. Journal of Southeast University(English Edition), 2019, 35(4): 482.
    [8] 闫梦华, 何欢, 周围, 等. 水环境下常用沥青路面的摩擦试验研究[J]. 中外公路, 2018, 38(3): 74.
    [9] 肖鹏飞, 韩森. 环境因素对水泥混凝土路面抗滑性能影响的试验研究[J]. 公路, 2012(7): 246.
    [10] 曹平. 表面形貌与污染物对沥青路面抗滑性能影响的研究[D]. 武汉理工大学能源与动力工程学院, 2009.
    [11] 曹晓峰, 李浩, 李善强, 等. 柴油泄漏对沥青混凝土路面的长期影响研究[J]. 公路, 2016, 61(5): 194.
    [12] 莫梓伟, 邵敏, 陆思华. 中国挥发性有机物(VOCs)排放源成分谱研究进展[J]. 环境科学学报, 2014, 34(9): 2179.
    [13] 杨玉冬, 邓润飞, 徐逸昊. 江苏省过江交通出行OD调查与交通特征研究[J]. 公路, 2019, 64(10): 194.
    [14] LI D D, GREENFIELD M L. Chemical compositions of improved model asphalt systems for molecular simulations[J]. Fuel, 2014, 115(July): 347.
    [15] 高爽, 金亮茂, 史建武, 等. 轻型汽油车VOCs排放特征和排放因子台架测试研究[J]. 中国环境科学, 2012, 32(3): 397.
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吴建涛,马鑫源,曹云刚,曹鹏飞,陈俊,陈捷.湿度-尾气共同作用对沥青混合料抗滑性能的影响[J].同济大学学报(自然科学版),2022,50(7):1017~1025

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  • 收稿日期:2021-08-30
  • 在线发布日期: 2022-07-22
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