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首页> 外文期刊>Transportation Research Procedia >Evaluating the Performance of Warm Mix Asphalt Incorporating Recycled Asphalt Pavement Treated Bases
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Evaluating the Performance of Warm Mix Asphalt Incorporating Recycled Asphalt Pavement Treated Bases

机译：评估热混合沥青的性能，包括再生沥青路面处理的碱基

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The use of warm mix asphalt (WMA) partially mixed with recycled asphalt pavement (RAP) as a base course or a sub-base course is continually gaining interest all over the world, particularly in Europe and North America. The progressive interest and preference of WMA-RAP over hot mixed asphalt (HMA) resides in the exceptional benefits WMA-RAP offers. Those benefits include health benefit to workers, economic benefits, and paving benefits in cold weather condition. Although WMA partially mixed with RAP was originally created to overcome the environmental challenges and the shortages of natural resources, the fact remains that it has shortcomings in performing well against rutting failure, and moisture damage. Therefore, this paper aims to evaluate and to understand the mechanical performances of WMA partially mixed with RAP in terms of fatigue cracking and rutting damage. In order to achieve the aim of this study, the indirect tensile strength test was conducted. Thereafter, the results obtained were used as input data to model the flexible pavement. Furthermore, various scenarios of structural flexible pavements subjected to the effect of load were analysed and modeled using the 3D finite element method (FEM) in ABAQUS and the layered elastic analysis (LEA) as a control. The Results showed that the HMA and the WMA were in close proximity, as the percentage difference between the horizontal strain at the bottom of the asphalt layers 3.7% for the 3D FEM Model and the compressive vertical strain on the top of the sub-grade 1%, which imply that the WMA can perform more or less as the HMA. Overall, the RAP can be incorporated successfully in the WMA which can be applied to new construction and rehabilitation of low to medium traffic volume roads.
机译：使用温热的沥青（WMA）部分混合与再生沥青路面（RAP）作为基础路线或子基础课程，这是遍布世界各地的兴趣，特别是在欧洲和北美。 WMA-ram对热混合沥青（HMA）的逐步兴趣和偏好居住在卓越的益处WMA-RAP提供。这些福利包括对寒冷天气条件的工人，经济效益和铺路益处的健康效益。虽然最初创造了与RAP部分混合的，但克服了环境挑战和自然资源短缺，但事实仍然是在抵抗车辙失败和水分损害方面具有缺点。因此，本文旨在评估和理解WMA的机械性能与疲劳裂解和车辙损伤方面与RAP部分混合。为了实现本研究的目的，进行间接拉伸强度试验。此后，获得的结果用作输入数据以模拟柔性路面。此外，使用ABAQU中的3D有限元方法（FEM）和层状弹性分析（LEA）作为对照，分析和建模经受负荷效果的结构柔性路面的各种情况。结果表明，HMA和WMA紧邻，因为沥青层底部的水平应变与3D FEM模型的3.7％之间的水平应变与子级顶部的压缩垂直应变之间的百分比差％，这意味着WMA可以或多或少地表现为HMA。总体而言，RAP可以成功地在WMA中成功地纳入，可应用于新的建筑和康复到低至中等交通量道路。

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