排水性沥青混合料纵、横向渗透性能试验研究

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英文篇名：Experimental Study on Longitudinal and Lateral Permeability of Porous Asphalt Mixture 作者：何昌轩 英文作者：HE Changxuan; 关键词：排水性沥青混合料 ; 空隙率 ; 路用性能 ; 横向渗透系数 ; 纵向渗透系数 英文关键词：Porous asphalt mixture;;Air voids;;Road performance;;Lateral permeability coefficient;;Longitudinal permeability coefficient 中文刊名：SHGL 英文刊名：Shanghai Highways 机构：上海市市政规划设计研究院有限公司; 出版日期：2019-03-31 出版单位：上海公路 年：2019 期：No.152 语种：中文; 页：SHGL201901017 页数：5 CN：01 ISSN：31-1712/U 分类号：6+80-82+86

摘要

设计了三种空隙率的排水性沥青混合料,按照欧洲标准EN 12697-19测试其纵向和横向渗透系数,结果显示,细级配的纵向渗透系数与横向渗透系数大致相等,粗级配的横向渗透系数大于纵向渗透系数。混合料的空隙率保持在18%以上要求其横向渗透系数为1.12 mm/s,纵向渗透系数为0.68 mm/s。通过路用性能反推的横向渗透性系数应控制在(1.12,4.479)区间,纵向渗透系数应控制在(0.68,1.774)区间,纤维对于混合料的渗透系数的影响甚微。
        The longitudinal and lateral permeability coefficients of three kinds of porous drainage asphalt mixtures were tested according to the European standard EN 12697-19.The results show that the longitudinal and lateral permeability coefficients of fine gradation are approximately equal.The lateral permeability coefficients of coarse gradation are larger than longitudinal permeability coefficients.The lateral permeability coefficient is 1.12 mm/s and the longitudinal permeability coefficient is 0.68 mm/s when the air void of the mixture is above 18%.The lateral permeability coefficient should be controlled in the range of (1.12, 4.479) and the longitudinal permeability coefficient should be controlled in the range of(0.68, 1.774).Fiber has little effect on the permeability coefficient of the mixture.

引文

[1]日本道路协会.排水性铺装技术指针[案][M].东京:丸善株式会社,1996.
    [2]公路沥青路面施工技术规范:JTG F40-2004[S].北京:人民交通出版社,2004.