Performance enhancement of porous asphalt pavement using red mud as alternative filler
Performance enhancement of porous asphalt pavement using red mud as alternative filler
复制标题
使用赤泥作为替代填料增强多孔沥青路面的性能
DOI：
10.1016/j.conbuildmat.2017.11.105
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发表时间：
2018-01-30
影响因子：
7.4
通讯作者：
Wang, Hanbing
中科院分区：
文献类型：
--
作者：
Zhang, Hengji;Li, Hui;Wang, Hanbing
多孔沥青路面材料是一种空隙率在18%以上的特种沥青混合料。孔隙率对于多孔沥青路面的排水、降噪、净水等生态功能至关重要。然而，路面的多孔结构也造成了一些结构缺陷。车辙、散线、孔洞堵塞等问题阻碍了其在重载、高速领域的推广。造成松散和车辙的主要原因是温度敏感性和沥青砂浆缺乏附着力，特别是在车辆反复重载的情况下。首先，本研究制备了六种类型的沥青砂浆，包括两种填料（石灰石粉和赤泥）和三种填料沥青比（0.3、0.6、0.9）。其次，通过Brookfield粘度、Superpave高温粘结剂标准G*/sin delta、多重应力蠕变恢复和弯曲梁流变仪研究了沥青砂浆的流变性能。第三，本研究研究了填料类型和填料-沥青比（FB 比）对气孔、渗透性、粘合性能和抗散结性能的影响。最后，进行了汉堡轮跟踪试验和三种类型的坎塔布罗试验（标准、水浸和老化），证实赤泥的抗拆散和抗车辙性能比广泛使用的石灰石粉更好。结果表明，FB 比例为 0.9 的赤泥填料多孔沥青的性能表现出增强的抗拆散和车辙性能。 (C) 2017 Elsevier Ltd. 保留所有权利。
Porous asphalt pavement material is a special asphalt mixture with a void content of 18% or more. The porosity is essential to the ecological functions of porous asphalt pavement, i.e., water drainage, noise reduction, water purification. However, the porous structure of pavement also has caused some structural defects. Rutting, raveling and void clogging hindered its popularization in heavy-load and highspeed field. The major cause of the raveling and rutting is the temperature sensitivity and a lack of adhesion of asphalt mortar, especially under repeated heavy load from vehicles. Firstly, this study prepares six types of asphalt mortar including two types of fillers (limestone powder and red mud) and three filler bitumen ratios (0.3, 0.6, 0.9). Secondly, the rheological properties of asphalt mortar are investigated through Brookfield Viscosity, Superpave high temperature binder criteria G*/sin delta, Multiple Stress Creep Recovery and Bending Beam Rheometer. Thirdly, this study investigated the effect of filler type and filler-bitumen ratio (FB ratio) on the air void, permeability, adhesion performance and raveling resistance. Finally, Hamburg Wheel Tracking Test and three types of Cantabro Tests (standard, water immersion and aging) are performed to confirm that the raveling and rutting resistance performance of red mud is better compared to the widely used limestone powder. The results indicate that the performance of porous asphalt with red mud filler at 0.9 FB ratio exhibited enhanced performance for raveling and rutting resistance. (C) 2017 Elsevier Ltd. All rights reserved.