沥青路面超薄磨耗层材料特性与施工关键技术研究

Material Characteristics and Construction Key of Ultra-thin Abrasive Layer on Asphalt Pavementtechnical study

文章阐述了沥青路面超薄磨耗层的材料特性以及在旧路罩面和桥面加铺的适应性,并探讨了磨耗层对于改善路面行车舒适性、封闭细微裂缝、改善路面功能等方面的作用。通过分析原材料性质和矿质混合料级配曲线,总结出超薄磨耗层集料分布特性和间断半开级配的特点。对磨耗层的施工准备、工艺流程及控制条件等关键技术问题进行全面分析和总结,并在此基础上提出施工质量的验收指标和标准。

This paper expounds the material characteristics of the ultra-thin wear layer of asphalt pavement and the adaptability of the overlay on the surface of the old road cover and the bridge surface, and probes into the effect of the wear layer on improving the comfort of road traffic, closing the fine cracks and improving the function of the pavement. By analyzing the properties of raw materials and gradation curves of mineral aggregate, the characteristics of aggregate distribution and discontinuous semi open gradation of ultra-thin wearing layer are summarized. The key technical problems such as the construction preparation, process flow and control conditions of the wear layer are analyzed and summarized, and on this basis,the acceptance indexes and standards of the construction quality are put forward.