Pan Jingsheng, Li Ping, Zhao Liu, Pan Qiang, Ni Jiaming, Wang Yong
Department of Civil Engineering, Chengdu Technological University, Yibin 644000, China.
College of Water and Architectural Engineering, Shihezi University, Shihezi 832003, China.
Materials (Basel). 2023 Nov 21;16(23):7247. doi: 10.3390/ma16237247.
In this work, the long-term skid resistance attenuation law of asphalt mixtures in the presence of aeolian sand was studied. Four types of asphalt mixtures underwent skid resistance abrasion tests using an accelerated loading tester. The pendulum value (BPN) and structure depth (MTD) of these four mixtures were determined under various conditions of sand density and abrasion times. The correlation between the BPN and density and the number of times of abrasion were investigated, respectively, to analyze the skid resistance attenuation law at the microscopic and macroscopic levels. Our results indicate that the skid resistance of the four types of asphalt mixtures initially decreased and subsequently reached a stable state. Sand density primarily influences skid resistance during the initial stage, while the number of abrasions becomes the dominant factor affecting skid resistance in the later stages.
在这项工作中，研究了在风积沙存在的情况下沥青混合料的长期抗滑性能衰减规律。使用加速加载试验机对四种类型的沥青混合料进行了抗滑耐磨试验。在不同的砂密度和磨损次数条件下，测定了这四种混合料的摆值（BPN）和构造深度（MTD）。分别研究了BPN与密度以及磨损次数之间的相关性，以在微观和宏观层面分析抗滑性能衰减规律。我们的结果表明，四种类型的沥青混合料的抗滑性能最初下降，随后达到稳定状态。砂密度在初始阶段主要影响抗滑性能，而在后期磨损次数成为影响抗滑性能的主导因素。
