A Study on the Design Method for the Material Composition of Small Particle-Size Asphalt Mixture for Controlling Cracks in Asphalt Pavement
A Study on the Design Method for the Material Composition of Small Particle-Size Asphalt Mixture for Controlling Cracks in Asphalt Pavement
复制标题
DOI：
10.3390/app9101988
复制
发表时间：
2019-05
期刊：
影响因子：
--
通讯作者：
Jiyu Xin;J. Pei;M. Akiyama;Rui Li;Jiu-peng Zhang;Libo Shao
中科院分区：
文献类型：
--
作者：
Jiyu Xin;J. Pei;M. Akiyama;Rui Li;Jiu-peng Zhang;Libo Shao
一般来说，各种裂缝是沥青路面使用期间的主要病害类型。为了节省养护成本，有效提高沥青路面的抗裂性，提出了一种独特的小粒径沥青混合料材料成分设计方法，用于控制沥青路面裂缝。首先，根据 A.N. 设计了玛蹄脂沥青 (SMA)-II 作为基本级配。 Talbot曲线和SMA-II-1、SMA-II-2和SMA-II-3分别根据Superpave配合比设计方法、Bailey方法和粒子干涉理论设计。其次，根据马歇尔试验结果，确定了三个级配的最佳纤维含量和最佳沥青含量。然后考察了1.18 mm筛子和0.075 mm筛子通过率对SMA-II空隙率的影响以及填料沥青比对SMA-II性能的影响，得到了合适的填料沥青比范围。最后通过高温性能测试、水稳定性测试和防滑性测试证明SMA-II的整体性能满足规格要求。低温弯曲试验和弯曲应变能密度分析表明，添加胶粉改性剂和聚合物纤维的SMA-II比SMA-I（SBS改性混合物）具有更好的抗裂性能。生命周期成本分析显示了 SPS 沥青薄覆盖层相对于传统 AC-13 薄覆盖层的经济优势。
Generally, various kinds of cracks are the main type of distresses during the service period of asphalt pavements. To save maintenance costs and improve the crack resistance of asphalt pavements effectively, this paper presents a unique design method for the material composition of small particle-size (SPS) asphalt mixture for controlling cracks in asphalt pavement. First, Stone Mastic Asphalt (SMA)-II was designed as a basic gradation according to the A.N. Talbot curve and SMA-II-1, SMA-II-2 and SMA-II-3 were designed according to the Superpave mix design method, the Bailey method and the Particle interference theory, respectively. Second, based on Marshall test results, the optimal fiber content and optimal asphalt content of three gradations were determined. Then, the influence of the passing rate of 1.18-mm sieve and 0.075-mm sieve on the air voids of SMA-II and the influence of the filler-asphalt ratio on the performance of SMA-II were investigated, and an appropriate range of filler-asphalt ratio was obtained. Finally, a high-temperature performance test, a water stability test, and a skid resistance test demonstrate that the overall performance of SMA-II can satisfy the specifications. A low-temperature bend test and analysis of bending strain energy density show that SMA-II with a crumb rubber modifier and a polymer fiber has better crack resistance performance than SMA-I (SBS-modified mixture). Life-cycle cost analysis shows the economic advantage of SPS asphalt thin overlays over traditional AC-13 thin overlays.