MAC改性沥青大粒径透水性沥青混合料试验研究-长安大学.PDF

第8 卷　第6 期 交 通 运 输 工 程 学 报 Vol.8　No.6 2008 年12 月 Journal of Traffic and Transportation Engineering Dec.2008 :1671-1637(2008)06-0006-07 MAC 1, 2 1 1 王恩东 ,张洪亮 ,王选仓 (1. , 　710064; 2., 　250102) 　:为了提高大粒径透水性 青混合料(LSPM)基层的路用性能, 以MAC 改性 青作为 LSPM 结合料, 对MAC 改性 青、基质 青和SBS 改性 青的性能进行了对比, 提出了MAC 改 性 青LSPM 高温稳定性、水稳定性、抗疲劳性、渗透性、抗反射裂缝性等路用性能要求,并进行了 MAC 改性 青LSPM 材料组成设计、施工技术研究和试验路修筑。试验结果表明:MAC 改性 青LSPM 空隙率为 13%～18%, 青膜的厚度大于12 μ, 模量为400 ～600 MPa,试验路通车 2年后车辙量在4～8 之间,这表明MAC 改性 青LSPM 具有较高的路用性能。 :路面材料;大粒径透水性 青混合料;改性 青;路用性能;材料组成设计;施工技术 :U414.1　　　:A Experimental research of MAC modified large stone porous asphalt mixture 1,2 1 1 WANG En-dong , ZHANG Hong-liang , WANG Xuan-cang (1.Key Laboratory for Special Area Highway Engineering of Ministry of Education, Changan University, Xi an 710064, Shaanxi, China;2.Shandong Highway Construction Group, Jinan 250102, Shandong, China) Abstract:In order to i prove the road perfor ances of base course ade of large stone porous asphalt ixture(LSPM), MAC(ultigrade asphalt ce ent) odified asphalt was used in LSPM, the perfor ances of atrix aphalt, MAC odified asphalt and SBS odified asphalt were co pared, the aterial co position design, construction technology and the road perfor ances of MAC odified LSPM, such as high-te perature stability, anti-fatigue property, per eability and anti-reflective crack property, were studied, and test roads were constructed.Test result shows that the porosity of LSPM is between 13%and 18%, its asphalt e brane