沥青加铺层对在役沥青混合料疲劳特性和疲劳寿命的影响

IF 8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-10-04 DOI:10.1016/j.conbuildmat.2025.143900

Chenyang Xue , Chunhui Jiang , Ruikang Yang , Xiang Li , Huailei Cheng , Jianlong Ye , Lulu Yang , Lijun Sun , Changxuan He

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引用次数: 0

摘要

沥青加铺技术已成为修复路面破损的重要手段。沥青加铺层增加了沥青路面的总厚度，减少了交通荷载的破坏作用，有利于提高沥青路面的抗疲劳性能。然而，对加铺层和不加铺层沥青路面填心沥青混合料疲劳性能的比较研究有限，并且尚未明确确定加铺层对沥青混合料疲劳性能的影响。为了解决这一问题，本文旨在研究沥青加铺层对在役沥青路面疲劳特性的影响。首先，取在役沥青路面加铺层和不加铺层沥青混合料样品，进行间接拉伸疲劳试验，测试其疲劳响应。其次，分析了沥青加铺层对沥青混合料疲劳相关指标（刚度模量、相角、耗散能）的影响。最后，建立了在役沥青路面加铺层和不加铺层沥青混合料的疲劳寿命模型，以评估沥青加铺层对路面抗疲劳性能的影响。结果表明：沥青加铺层降低了沥青路面疲劳相关指标随荷载循环的变化率，从而降低了沥青路面的疲劳损伤积累；此外，基于初始耗散能的疲劳寿命模型适用于各种荷载工况以及有无沥青加铺层的沥青路面。本研究结果有望为铺层后沥青混合料的疲劳性能评价提供参考。

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Effect of asphalt overlay on fatigue characteristics and fatigue life of in-service asphalt pavement mixtures

Asphalt overlay technology has emerged as a key approach for repairing pavement distresses. Asphalt overlay is believed beneficial to enhance asphalt pavement’s fatigue resistance, as overlay increases the overall thickness of pavement and decreases the damaging effects of traffic loadings. However, limited research has compared the fatigue behaviors of asphalt mixtures cored from asphalt pavements with and without asphalt overlay, and the effect of asphalt overlay on asphalt mixture’s fatigue performance has yet been clearly determined. To address this gap, this paper aimed to investigate the effect of asphalt overlay on the fatigue characteristics of the in-service asphalt pavement. Firstly, asphalt mixture samples were cored from in-service asphalt pavements with and without asphalt overlay, and those samples were performed with indirect tensile fatigue tests to test their fatigue responses. Secondly, effects of asphalt overlay on fatigue-related indicators (i.e., stiffness modulus, phase angle, dissipated energy) of asphalt mixtures were analyzed. Finally, fatigue life models of asphalt mixtures from in-service asphalt pavements with and without asphalt overlay were developed, to assess the impacts of asphalt overlay on pavement fatigue resistance. The results demonstrate that asphalt overlay decreases the variation rate of asphalt pavement’s fatigue-related indicators with loading cycles, thus lowering fatigue damage accumulation of asphalt pavement. Moreover, the fatigue life model based on initial dissipated energy is suitable for various loading conditions and asphalt pavements with and without asphalt overlay. The findings of this research are expected to facilitate the assessment of fatigue behaviors of asphalt mixtures after overlay construction.

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.