The determination of mechanical performance of laboratory produced hot mix asphalt mixtures using controlled RAP and virgin aggregate size fractions
The determination of mechanical performance of laboratory produced hot mix asphalt mixtures using controlled RAP and virgin aggregate size fractions
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DOI：
10.1016/j.conbuildmat.2011.06.068
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发表时间：
2012-01-01
影响因子：
7.4
通讯作者：
You, Zhanping
中科院分区：
文献类型：
--
作者：
Colbert, Baron;You, Zhanping
研究了级配再生沥青路面（RAP）材料对沥青混合料性能的影响。研究中使用的RAP混合物百分比为15%、35%和50%。在热混合沥青（HMA）鼓式设备内回收的RAP材料的量通常不超过30% RAP。对RAP和新集料混合沥青混合料进行了沥青路面分析仪（阿帕）车辙、改良Lottman和动态模量测试。平均而言，在所有RAP混合料中，RAP的添加使车辙减少了24%，并由于RAP沥青结合料和集料的添加而使弹性模量增加了52%;这使得混合料在较高温度和较重荷载条件下变硬。动态模量的结果表明，高百分比RAP混合物的统计显着差异。(C)2011爱思唯尔有限公司保留所有权利。
This study investigates the influence of fractionated reclaimed asphalt pavement (RAP) materials on asphalt mixture performance. The RAP mixture percentages used were 15%, 35%, and 50% in the study. The amount of RAP materials recycled within hot mix asphalt (HMA) drum plants are typically no more than 30% RAP. Asphalt pavement analyzer (APA) rutting, modified Lottman, and dynamic modulus testing were conducted on the RAP and virgin aggregate blended asphalt mixtures. On average between all RAP mixtures, the addition of RAP decreased rutting by 24%, and increased resilient modulus by 52% due to the addition of RAP asphalt binder and aggregates; which stiffen the mixture under higher temperature and heavier loading conditions. Dynamic modulus results indicated a statistical significant difference for high percentage RAP mixtures. (C) 2011 Elsevier Ltd. All rights reserved.