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沥青路面超薄聚氨酯磨耗层耐久性研究

Durability Investigation of Ultra-Thin Polyurethane Wearing Course for Asphalt Pavement.

作者信息

Wang Wenguang, Liu Baodong, Jin Dongzhao, Yu Miao, Zeng Junsen

机构信息

School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China.

Department of Civil, Environmental, and Geospatial Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA.

出版信息

Materials (Basel). 2024 Oct 11;17(20):4977. doi: 10.3390/ma17204977.

DOI:10.3390/ma17204977
PMID:39459684
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11509508/
Abstract

In this study, a wear-resistant ultra-thin wear layer was fabricated with polyurethane as an adhesive to investigate its durability for pavement applications. Its road performance was investigated based on indoor tests. First, the abrasion test was performed using a tire-pavement dynamic friction analyzer (TDFA), and the surface elevation information of the wear layer was obtained by laser profile scanning. The relationship between the anti-skid properties of the wear layer and the macro-texture was analyzed. Second, a Fourier infrared spectrometer and scanning electron microscope were employed to analyze the evolution of polyurethane aging properties in the pull-out test and accelerated ultraviolet (UV) aging test. The results showed that the mean profile depth (MPD), arithmetic mean wavelength of contour (λa), surface wear index (SBI), stage mass loss rate (σ), and total stage mass loss rate (ω) of the abrasive layer aggregate had significant multivariate quadratic polynomial relationships with the skidding performance of the abrasive layer. The tensile strength of the polyurethane ultra-thin abrasive layer decreased by only 2.59% after 16 days of UV aging, indicating a minimal effect of UV action on the aggregate and structural spalling of the polyurethane abrasive layer.

摘要

在本研究中，以聚氨酯为粘合剂制备了一种耐磨超薄磨耗层，以研究其在路面应用中的耐久性。基于室内试验对其路用性能进行了研究。首先，使用轮胎-路面动态摩擦分析仪（TDFA）进行磨损试验，并通过激光轮廓扫描获得磨耗层的表面高程信息。分析了磨耗层的抗滑性能与宏观纹理之间的关系。其次，采用傅里叶红外光谱仪和扫描电子显微镜分析了聚氨酯在拉拔试验和加速紫外线（UV）老化试验中的老化性能演变。结果表明，磨料层集料的平均轮廓深度（MPD）、轮廓算术平均波长（λa）、表面磨损指数（SBI）、阶段质量损失率（σ）和总阶段质量损失率（ω）与磨料层的抗滑性能具有显著的多元二次多项式关系。聚氨酯超薄磨料层在紫外线老化16天后，其拉伸强度仅下降了2.59%，表明紫外线作用对聚氨酯磨料层的集料和结构剥落影响极小。

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