刘振杰
摘要:公路沥青路面压实质量的好坏,将直接影响沥青路面的平整度和密实度。如何结合公路特点在配置较少机械设备的情况下,较经济和高质量的保证路面压实质量,本文结合公路工程的施工实践,重点阐述了施工中控制路面压实质量的具体技术措施。压实是沥青路面施工中的一道重要工序,对沥青路面质量有着至关重要的作用,压实不足和过压都会影响沥青路面质量。压实的目的是提高沥青混合料的强度、稳定性以及疲劳特性。本文主要介绍了公路沥青路面压实机理和工艺,并分析了如何提高质量控制。
关键词:沥青路面;压实工艺;质量控制;压实质量;控制技术
Abstract: highway asphalt pavement compaction quality is good or bad, will directly influence the smoothness of the asphalt pavement and density. How to combine the highway in the configuration characteristic less under the condition of mechanical equipment, the economy and high quality guarantee pavement compaction quality, based on the construction practice of the highway engineering, this paper focuses on the construction control of the pavement compaction quality of specific technical measures. Construction of asphalt pavement compaction is one of the important process, the quality of the asphalt pavement have a vital role, compaction shortage and over-voltage will affect the quality of the asphalt pavement. The purpose is to raise the compaction of asphalt mixture strength and stability and fatigue properties. This article mainly introduced the highway asphalt pavement compaction mechanism and process, and analyzed how to improve quality control.
Key words: the asphalt pavement; Compaction technology; Quality control; Compaction quality; Control technology
中图分类号:TU74文献标识码:A文章编号:
1 路面压实机理
路面压实的目的是提高沥青混合料的强度、稳定性以及疲劳特性。标准压实度相应的空隙率增加l%,疲劳寿命将要降低约35%,压实度每降低1%,沥青混合料的渗透性提高两倍,导致空隙率增大,从而加速沥青混合料的老化。过压将会使矿料破碎而使压实度反而降低或空隙率过小,易出现泛油和失稳,影响路面的强度与稳定性,因此必须合理地进行碾压。
压实过程是减少沥青混合料中气孔含量的过程,此过程为固体颗粒在一种粘弹性介质中的填实和定位,以形成一种更密实和有效的颗粒排列形式,使其具有良好的路面性能,满足使用要求。
2 在碾压技术方面,还应注意以下几个问题:
2.1 道路纵向接缝的碾压……p>