Journal of Road Engineering最新文献

Application of nanomaterials on the performance of SBS modified asphalt binders and mixtures: A comprehensive review 纳米材料在SBS改性沥青粘结剂和混合料性能中的应用综述

IF 8.6

Journal of Road Engineering

Pub Date : 2025-09-01 DOI: 10.1016/j.jreng.2025.01.002

Zakir Ullah , Zengping Zhang , Hao Liu , Jiajun Ji , Qingxu Li , Simon Pierre Rukundo , Muhammad Bilal

Presently, many asphalts and modified asphalts fail to satisfy long-term serviceability and durability criteria. Researchers are utilizing several asphalt modifiers to enhance the overall performance of flexible pavements. This study consolidated findings from multiple research efforts on using nanomaterials for modifying SBS modified asphalt (SBS MA) and conducted a comprehensive literature review. Initially, it discussed the importance of SBS MA within asphalt modification systems and identified the key nanomaterials utilized in SBS modified asphalt. After this, it reviewed their preparation methods, dispersion and characterization techniques, and their impact on the key performance parameters of SBS MA binder and its mixture such as viscosity, rutting resistance, fatigue resistance, ageing and moisture damage etc. Additionally, it highlighted the advantages of nanomaterials over other modifiers. This study also addressed the challenges and limitations of incorporating nanomaterials in SBS MA. The findings indicated that when properly integrated, nanomaterials could significantly improve the performance of SBS MA, making them a promising addition to future road construction and maintenance projects. However, using nanomaterials for SBS MA modifications and mixtures has been challenged by limited practical applications, insufficient life cycle cost analyses, a lack of standardized guidelines, cost-effective nanomaterials and insufficient mixing procedures. Those areas require additional research to realise the potential application of nanomaterials in SBS modified asphalt modifications full.

目前，许多沥青和改性沥青不能满足长期使用和耐久性标准。研究人员正在利用几种沥青改性剂来提高柔性路面的整体性能。本研究综合了利用纳米材料改性SBS改性沥青（SBS MA）的多项研究成果，并进行了全面的文献综述。首先，讨论了SBS MA在沥青改性体系中的重要性，并确定了SBS改性沥青中使用的关键纳米材料。综述了它们的制备方法、分散和表征技术，以及它们对SBS MA粘结剂及其混合物粘度、抗车辙性、抗疲劳性、老化性和湿损伤性等关键性能参数的影响。此外，它强调了纳米材料相对于其他改性剂的优势。本研究还讨论了在SBS MA中加入纳米材料的挑战和局限性。研究结果表明，当适当集成时，纳米材料可以显着提高SBS MA的性能，使其成为未来道路建设和维护项目中有希望的补充。然而，使用纳米材料进行SBS - MA改性和混合物一直受到实际应用有限、生命周期成本分析不足、缺乏标准化指南、具有成本效益的纳米材料和不充分的混合程序的挑战。这些领域需要进一步的研究，以充分实现纳米材料在SBS改性沥青改性中的潜在应用。

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引用次数: 0

Towards sustainable pavement construction: A review of the degree of blending in hot recycled asphalt mixture 走向可持续路面建设：热再生沥青混合料的掺合程度综述

IF 8.6

Journal of Road Engineering

Pub Date : 2025-09-01 DOI: 10.1016/j.jreng.2025.06.001

Ziming Liu , Shi Dong , Kun Xi , Hainian Wang

The use of hot recycled asphalt mixture (HRAM) allows for a reduction in the depletion of non-renewable resources and presents environmental benefits. However, concerns arise regarding the performance of HRAM due to the lower degree of blending (DOB) of virgin and aged asphalt (V&A asphalt). This paper aims to provide an up-to-date review on the DOB of V&A asphalt in HRAM. Initially, the paper introduces the DOB of V&A asphalt, followed by an analysis of the blending theory, evaluation methods, and influencing factors of DOB. Subsequently, the effect of DOB on the performance of HRAM is investigated, and molecular dynamic simulation is utilized to analyze the blend of V&A asphalt. Finally, methods for improving DOB are summarized. It was found that the use of high-resolution microscopy with tracer methods such as SEM/EDS was an effective way to characterize DOB. Furthermore, the chemical composition and colloid structure between virgin and aged asphalt are crucial to DOB. Additionally, improving DOB by utilizing the coupling effect of time and temperature during transportation, paving, and compaction stages is promising. Future research should focus on standardizing test methods, refining field simulation models, and developing intelligent construction technologies to achieve more efficient and durable blending. This review provides theoretical guidance and practical references for improving the DOB of V&A asphalt and promoting sustainable pavement construction.

热再生沥青混合料（HRAM）的使用可以减少不可再生资源的消耗，并具有环境效益。然而，由于原始沥青和老化沥青（V&；A沥青）的混合度（DOB）较低，HRAM的性能受到关注。本文旨在对HRAM中V&；A沥青的DOB进行最新的综述。本文首先介绍了V&；A沥青的DOB，然后分析了掺合原理、DOB的评价方法以及影响DOB的因素。随后，研究了DOB对HRAM性能的影响，并利用分子动力学模拟对V&；A沥青的共混物进行了分析。最后总结了提高DOB的方法。结果表明，采用高分辨率显微镜和示踪方法（如SEM/EDS）是表征DOB的有效方法。此外，原始沥青和老化沥青之间的化学成分和胶体结构对DOB至关重要。此外，利用运输、铺装和压实阶段的时间和温度耦合效应来改善DOB是有希望的。未来的研究应集中在规范测试方法、完善现场模拟模型、发展智能施工技术等方面，以实现更高效、更持久的混合。为提高V&；A沥青的DOB，促进可持续路面建设提供理论指导和实践参考。

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引用次数: 0

Multifaceted sensor-based approach for road quality assessment in the Indian road scenario 基于多面传感器的印度道路质量评估方法

IF 8.6

Journal of Road Engineering

Pub Date : 2025-09-01 DOI: 10.1016/j.jreng.2024.12.010

Anupama Jawale , Amiya Kumar Tripathy

This study aims to explore the feasibility of conducting supervised classification of road barriers in a practical context through the utilization of diverse data collection methods. These methods encompass accelerometer, ultrasonic, GPS, and real-time clock sensors, which collectively contribute to a comprehensive analysis of the subject matter. This study primarily focuses on the highways of India, along with urban and semi-urban areas, as its central subject of investigation. In order to facilitate the collection of data from these sensors, a mobile application referred to as DC has been meticulously developed. In this study, the data collected from the sensors undergo a transformation process to create a fuzzy dataset. This is achieved through the application of min-max normalization followed by fuzzification techniques. A variety of methodologies for measuring distance have been established, each aimed at achieving optimal classification outcomes. One of the primary objectives is to establish comprehensive standards for assessing the condition of roadways, considering a multitude of factors, including the overall length of the road and the extent of any damage present. This study conducts a comprehensive comparative analysis of all distance metrics employed for the classification of road impediments. The findings reveal promising results regarding accuracy, demonstrating an approximate range between 98% and 99%. Furthermore, to facilitate the observation of outcomes in real time, a visualization tool is currently under development. This tool aims to display road obstructions on maps, enhancing the user's ability to navigate and understand the current traffic conditions effectively.

本研究旨在通过多种数据收集方法，探索在实际环境中对道路障碍物进行监督分类的可行性。这些方法包括加速度计、超声波、GPS和实时时钟传感器，它们共同有助于对主题进行全面分析。本研究主要关注印度的高速公路，以及城市和半城市地区，作为其调查的中心主题。为了方便从这些传感器收集数据，一个被称为DC的移动应用程序已经被精心开发出来。在本研究中，从传感器收集的数据经过转换过程以创建模糊数据集。这是通过应用最小-最大归一化和模糊化技术实现的。已经建立了各种测量距离的方法，每种方法都旨在获得最佳分类结果。主要目标之一是建立评估道路状况的综合标准，考虑到多种因素，包括道路的总长度和现有任何损坏的程度。本研究对用于道路障碍物分类的所有距离度量进行了全面的比较分析。研究结果揭示了准确度方面的令人鼓舞的结果，显示了大约在98%到99%之间的范围。此外，为了方便实时观察结果，目前正在开发一种可视化工具。该工具旨在在地图上显示道路障碍物，增强用户导航和有效了解当前交通状况的能力。

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引用次数: 0

Resilient behavior of unbound granular material: A review 非粘结颗粒材料的弹性行为：综述

IF 8.6

Journal of Road Engineering

Pub Date : 2025-09-01 DOI: 10.1016/j.jreng.2025.01.004

Hugo Alexander Rondón-Quintana , Fredy Alberto Reyes-Lizcano , Juan Gabriel Bastidas-Martínez

When a vehicle moves over a flexible pavement structure, it generates loading and unloading cycles that produce recoverable (resilient) and permanent (plastic) deformations in the granular base and subbase layers, which are made of unbound granular materials (UGMs). The primary parameter used to evaluate the resilient response of UGMs in pavements is the resilient modulus (MR). The MR is widely used in calculating stress-strain states for flexible pavement design and as a control parameter during the construction process. It is also employed to understand the progression of distresses, such as fatigue cracking and rutting. The main objective of this study was to conduct a literature review on the resilient behavior of UGMs. This manuscript presents and describes the MR and the factors that influence it. It also outlines the evolution of the mathematical equations most commonly used to estimate and predict this physical parameter. Conclusions and recommendations for future research are provided at the end of the article. Despite the large amount of research done on the subject, the resilient behavior of UGM has not yet been fully understood. This is since these materials are highly heterogeneous and show nonlinear-anisotropic behavior under different cyclic loading paths and water contents. Likewise, these materials undergo different behaviors depending on their macro and microscopic properties (gradation, density, porosity, texture, mineralogy, particle geometry and orientation, temperature, among others). On the other hand, the main limitation of the mathematical equations is that their parameters are difficult to determine experimentally and are not constants of the material (they are state variables that can change with multiple factors). Additionally, these equations do not consider the boundary conditions to which UGM in pavements are exposed. Moreover, they are obtained from repeated load triaxial (RLT) tests, which cannot simulate the three cyclic stress components (vertical, horizontal, and shear) to which UGMs are subjected in a pavement. In recent years, there has been an increase in studies evaluating the use of recycled aggregates and the effect of temperature (particularly at subzero temperatures), but more research is still needed to reach definitive conclusions.

当车辆在灵活的路面结构上行驶时，它会产生加载和卸载循环，在颗粒基层和亚基层中产生可恢复（弹性）和永久（塑性）变形，这些变形是由未结合的颗粒材料（ugm）制成的。用于评估ugm在路面中的弹性响应的主要参数是弹性模量（MR）。MR被广泛应用于柔性路面设计的应力-应变状态计算和施工过程中的控制参数。它也被用来理解痛苦的进展，如疲劳开裂和车辙。本研究的主要目的是对ugm的弹性行为进行文献综述。本文介绍并描述了磁流变及影响磁流变的因素。它还概述了最常用于估计和预测这一物理参数的数学方程的演变。文章最后给出了结论和对未来研究的建议。尽管在这个问题上做了大量的研究，但UGM的弹性行为尚未得到充分理解。这是因为这些材料在不同的循环加载路径和含水量下具有高度的非均质性和非线性各向异性。同样，这些材料根据其宏观和微观特性（级配、密度、孔隙度、纹理、矿物学、颗粒几何形状和取向、温度等）经历不同的行为。另一方面，数学方程的主要限制是它们的参数难以通过实验确定，并且不是材料的常数（它们是可以随多种因素变化的状态变量）。此外，这些方程没有考虑路面中UGM暴露的边界条件。此外，它们是从重复荷载三轴（RLT）试验中获得的，该试验无法模拟ugm在路面中所承受的三个循环应力分量（垂直、水平和剪切）。近年来，评估再生骨料的使用和温度（特别是在零度以下的温度下）影响的研究有所增加，但仍需要更多的研究来得出明确的结论。

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引用次数: 0

Discretization and assembly connection technology of cement concrete pavement structure: A review 水泥混凝土路面结构的离散化与装配连接技术综述

IF 8.6

Journal of Road Engineering

Pub Date : 2025-09-01 DOI: 10.1016/j.jreng.2024.12.009

Mingjing Fang , Longjie Xiang , Yao Wang , Shaojie Li , Hanhui Wang , Hua Xie

Precast concrete pavements (PCPs) represent an innovative solution in the construction industry, addressing the need for rapid, intelligent, and low-carbon pavement technologies that significantly reduce construction time and environmental impact. However, the integration of prefabricated technology in pavement surface and base layers lacks systematic classification and understanding. This paper aims to fill this gap by introducing a detailed analysis of discretization and assembly connection technology for cement concrete pavement (CCP) structures. Through a comprehensive review of domestic and international literature, the study classifies prefabricated pavement technology based on discrete assembly structural layers and presents specific conclusions (i) surface layer discrete units are categorized into bottom plates, top plates, plate-rod separated assemblies, and prestressed connections, with optimal material compositions identified to enhance mechanical properties; (ii) base layer discrete units include block-type, plate-type, and beam-type elements, highlighting their contributions to sustainability by incorporating recycled materials (iii) planar assembly connection types are assessed, ranking them by load transfer efficiency, with specific dimensions provided for optimal performance; and (iv) vertical assembly connections are defined by their leveling and sealing layers, suitable for both new constructions and repairs of existing roads. The insights gained from this review not only clarify the distinctions between various structural layers but also provide practical guidelines for enhancing the design and implementation of PCP. This work contributes to advancing sustainable and resilient road construction practices, making it a significant reference for researchers and practitioners in the field.

预制混凝土路面（pcp）代表了建筑行业的创新解决方案，满足了对快速、智能和低碳路面技术的需求，大大减少了施工时间和对环境的影响。然而，路面预制件与基层预制件的集成技术缺乏系统的分类和认识。本文旨在通过对水泥混凝土路面（CCP）结构的离散化和装配连接技术的详细分析来填补这一空白。通过对国内外相关文献的综合分析，对预制路面技术进行了基于离散装配结构层的分类，并得出了具体的结论：(1)表层离散单元分为底板、顶板、板杆分离组件和预应力连接，并确定了最佳材料组合以提高力学性能；（ii）基层离散单元包括块型、板型和梁型单元，通过结合可回收材料，突出了它们对可持续性的贡献（iii）对平面装配连接类型进行了评估，根据负载传递效率对它们进行了排名，并提供了最佳性能的特定尺寸；（iv）垂直装配连接由其找平和密封层定义，适用于新建筑和现有道路的维修。本综述所获得的见解不仅澄清了不同结构层之间的区别，而且为加强PCP的设计和实施提供了实用指南。这项工作有助于推进可持续和弹性的道路建设实践，使其成为该领域研究人员和从业人员的重要参考。

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引用次数: 0

Study on separation identification of cement stabilized crushed stone mixture based on convolutional neural network 基于卷积神经网络的水泥稳定碎石混合料分离识别研究

IF 8.6

Journal of Road Engineering

Pub Date : 2025-09-01 DOI: 10.1016/j.jreng.2024.09.003

Qingyi Xiao, Miaomiao Zhu, Zhenchao Zhao, Xinyu Zhao, Fangyuan Gong

With the vigorous development of China's transportation industry, the mileage of high-grade highways based on semi rigid base layers has been increasing year by year. However, the commonly used material for semi rigid base layers, cement stabilized crushed stone mixture (hereinafter referred to as water stabilized mixture), often experiences segregation during mixing, transportation, and paving. Separation of water stabilized mixture can greatly reduce the service life of roads and cause damage to people's property, the traditional separation detection method that relies on manual experience has problems of low detection efficiency and low recognition accuracy. In order to solve these problems and assist in the modernization of road construction, this article proposes a separation recognition method for water stabilized mixtures based on deep learning. Firstly, a database of segregation diseases of water stabilized mixture was built. Secondly, the control tests were set up by standard fine-tuning and feature extraction, and four different optimizers were set up respectively. By comparing accuracy, loss, precision, recall and F₁-score at the end of the pre-trained network, the overall recognition effect of ResNet-101 as the network model was better. Thirdly, the ResNet-101 model was optimized by SpotTune, replacing cross entropy loss with focus loss, adding PReLU to the pre-trained network and a BN layer to the top layer of the pre-trained network, and using 1 × 1. Convolutional replacement of the fully connected layer. Finally, build a web side water stabilized mixture segregation recognition platform, and its stability was verified in practical engineering.

随着中国交通运输业的蓬勃发展，基于半刚性基层的高等级公路里程逐年增加。然而，半刚性基层常用材料水泥稳定碎石混合料（以下简称水稳定混合料）在搅拌、运输、铺装过程中往往出现离析现象。水稳定混合物的分离会大大降低道路的使用寿命，对人们的财产造成损害，传统的依靠人工经验的分离检测方法存在检测效率低、识别精度低等问题。为了解决这些问题，帮助道路建设现代化，本文提出了一种基于深度学习的水稳混合料分离识别方法。首先，建立了水稳混合料离析病害数据库；其次，通过标准微调和特征提取建立控制测试，并分别建立4种不同的优化器。通过对比预训练网络的准确率、损失、精密度、召回率和f1得分，ResNet-101作为网络模型的整体识别效果更好。第三，利用SpotTune对ResNet-101模型进行优化，用焦点损失代替交叉熵损失，在预训练网络中加入PReLU，在预训练网络的顶层加入BN层，使用1 × 1。全连接层的卷积替换。最后，构建了腹板侧水稳定混合液偏析识别平台，并在实际工程中验证了其稳定性。

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引用次数: 0

Tire/road noise analysis of innovative microsurfacing mixtures based on SPERoN® model and noise-related texture indicators 基于SPERoN®模型和噪声相关纹理指标的创新型微表面混合料轮胎/道路噪声分析

IF 8.6

Journal of Road Engineering

Pub Date : 2025-09-01 DOI: 10.1016/j.jreng.2025.05.001

Sérgio Copetti Callai , Manuel De Rose , Beate Altreuther , Rosolino Vaiana , Cesare Sangiorgi

Road traffic noise is a significant environmental issue in urban areas with major health and economic implications for communities. Thus, a comprehensive understanding of tire/road noise mechanism is crucial for road pavement engineering. This study evaluates the noise behaviour of six innovative microsurfacing mixtures incorporating natural and artificial aggregates (geopolymers and crumb rubber) with varying particle size distributions and binders. A 2D laser analysis aims at collecting surface texture indicators, while noise-related indicators were derived according to ISO 10844 standards. Noise levels were predicted using the SPERoN® model (statistical physical explanation of rolling noise), analysing the vibro-dynamic and the aerodynamic contributions separately. Correlations between tire/road noise levels predicted by the model and surface texture indicators elucidate the key factors influencing noise generation mechanism. The findings indicate that lower nominal maximum aggregate size (NMAS) and uniformly shaped artificial aggregates substantially mitigate rolling noise. Moreover, profiles with negative skewness and positive kurtosis exhibit reduced noise generation. The study highlights the limitations of traditional indicators like the estimated noise difference due to texture (END_T) and highlights the g-factor from the Abbott curve as a more reliable predictor of pavement noise properties. These findings provide valuable insights for designing low-noise pavements with enhanced performance, offering new perspectives on the noise behaviour and acoustic properties of microsurfacing.

道路交通噪音是城市地区的一个重大环境问题，对社区的健康和经济产生重大影响。因此，全面了解轮胎/道路噪声机理对道路路面工程至关重要。本研究评估了六种创新的微表面混合物的噪音行为，这些混合物包括天然和人工聚集体（地聚合物和橡胶屑），具有不同的粒径分布和粘合剂。二维激光分析旨在收集表面纹理指标，而噪声相关指标根据ISO 10844标准推导。使用SPERoN®模型（滚动噪声的统计物理解释）预测噪声水平，分别分析振动动力学和空气动力学贡献。模型预测的轮胎/道路噪声水平与路面纹理指标之间的相关性阐明了影响噪声产生机制的关键因素。研究结果表明，较低的名义最大骨料尺寸（NMAS）和均匀形状的人工骨料可以有效地减轻滚动噪声。此外，负偏度和正峰度的曲线显示出更少的噪声产生。该研究强调了传统指标的局限性，如估计纹理噪声差异（ENDT），并强调了雅培曲线中的g因子是路面噪声特性更可靠的预测指标。这些发现为设计具有更高性能的低噪音路面提供了有价值的见解，为研究微路面的噪音行为和声学特性提供了新的视角。

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引用次数: 0

Effects of plateau environment on cement concrete properties: A review 高原环境对水泥混凝土性能的影响

IF 8.6

Journal of Road Engineering

Pub Date : 2025-09-01 DOI: 10.1016/j.jreng.2024.08.001

Liangliang Li , Liping Dang , Chengbing Wang , Zhiyi Wei , Dejun Han , Zehua Chen , Rui He

The plateau environment not only affects the development of concrete's early strength but also damages its durability during its service life. This paper summarized and analyzed the impact of plateau environments on concrete’ properties and proposed methods to improve the performance of concrete in plateau environment. The results indicated that low humidity and high evaporation rates in plateau regions inhibit the hydration of cement in concrete, leading to an increased content of micro-pores ranging from 500 to 1000 nm and raising the risk of early-stage cracking, thus reducing the impermeability of concrete. The low atmospheric pressure (AP) condition of 60 kPa decreases the entrained air content in concrete by over 20%, diminishes the pores under 200 μm, and increases the average air-voids diameter and spacing factor, resulting in a decrease of more than 5% in the 28 d compressive strength of concrete. Consequently, the durability of concrete is compromised. Saponin and rosin-based air-entraining agents are recommended to improve the performance of concrete in plateau environments. Nanoparticles also aid in stabilizing bubbles in such conditions. Selecting low-heat specialty cements, increasing the amount of cement used, and extending the curing period are also vital measures to enhance the performance of plateau concrete.

高原环境不仅影响混凝土早期强度的发展，而且影响混凝土在使用寿命期间的耐久性。总结分析了高原环境对混凝土性能的影响，提出了提高高原环境混凝土性能的方法。结果表明，高原地区低湿度和高蒸发速率抑制了混凝土中水泥的水化作用，导致500 ~ 1000 nm微孔含量增加，增加了混凝土早期开裂的风险，从而降低了混凝土的抗渗性能。60 kPa的低压条件使混凝土中夹带空气含量降低20%以上，200 μm以下孔隙减少，平均气孔直径和间距系数增加，使混凝土28d抗压强度降低5%以上。因此，混凝土的耐久性受到损害。建议使用皂素和松香类引气剂来改善高原环境下混凝土的性能。纳米颗粒也有助于在这种条件下稳定气泡。选用低热特种水泥、增加水泥用量、延长养护期也是提高高原混凝土性能的重要措施。

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引用次数: 0

Laboratory performance of sustainable stone matrix asphalt mixtures utilizing electric arc furnace slag and waste plastic 利用电弧炉渣和废塑料的可持续石基沥青混合料的实验室性能

IF 8.6

Journal of Road Engineering

Pub Date : 2025-09-01 DOI: 10.1016/j.jreng.2025.01.003

Shiva Kumar Govindaraju , Nitin Gopanahally Chandrasekharaiah , Gurudeep Ganesh , Sunil Siddaraju , Ujwal Mallaiah Sudhamani , Hanumanahally Kambada Ramaraju

This research examined the feasibility of incorporating electric arc furnace (EAF) slag and waste plastic into stone matrix asphalt (SMA) mixtures. With annual global production of over 70 million tons of EAF slag and 300 million tons of plastic waste, repurposing these materials could yield substantial environmental benefits. The research evaluated SMA mixtures with EAF slag as aggregate replacement and waste plastic as a binder modifier. The research aimed to develop sustainable SMA formulations while promoting recycling of industrial byproducts. Laboratory experiments were conducted to evaluate mix design characteristics, drain-down potential, abrasion resistance, rutting resistance, moisture susceptibility, fatigue performance, and stiffness of modified SMA mixtures. The addition of waste plastic, ranging from 4%, 6%, 8% and 12% by weight of bitumen, demonstrated significant improvements in key properties. Results showed that waste plastic reduced the optimum binder content and increased voids in the mineral aggregate. EAF slag mixtures demonstrated improved drain-down characteristics and moisture susceptibility. Both rutting resistance and fatigue life increased significantly with waste plastic content, with EAF slag mixtures consistently outperforming those made with conventional aggregates. Ultrasonic pulse velocity tests indicated higher stiffness in modified mixtures. The optimal waste plastic content was determined to be 8% by weight of bitumen. Statistical analysis confirmed significant effects of both EAF slag and waste plastic on multiple performance parameters. These findings highlight the potential of incorporating industrial byproducts into SMA mixtures to achieve high-performance road construction solutions, offering a viable pathway for addressing global waste management challenges.

本研究考察了将电弧炉炉渣和废塑料掺入石基沥青混合料中的可行性。全球每年生产7000多万吨电炉炉渣和3亿吨塑料废物，重新利用这些材料可以产生巨大的环境效益。研究了以电炉炉渣代替骨料、废塑料作为粘结剂的SMA混合料。该研究旨在开发可持续的SMA配方，同时促进工业副产品的回收利用。通过室内试验来评估改性SMA混合料的混合设计特性、排水势、耐磨性、车辙性、水分敏感性、疲劳性能和刚度。废塑料在沥青中所占比重从4%、6%、8%到12%不等，其关键性能得到了显著改善。结果表明，废塑料降低了最佳粘结剂含量，增加了矿物骨料的空隙。电炉炉渣混合物表现出更好的排水特性和水分敏感性。随着废塑料掺量的增加，抗车辙性能和疲劳寿命都显著提高，电炉渣混合料的性能始终优于常规骨料混合料。超声脉冲速度试验表明，改性混合物具有较高的刚度。确定了最佳废塑料掺量为沥青重量比的8%。统计分析证实了电炉渣和废塑料对多个性能参数的影响均显著。这些发现突出了将工业副产品纳入SMA混合物中以实现高性能道路施工解决方案的潜力，为解决全球废物管理挑战提供了可行的途径。

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引用次数: 0

Evaluation of effective parameters on pavement surface temperature 路面温度有效参数的评价

IF 8.6

Journal of Road Engineering

Pub Date : 2025-09-01 DOI: 10.1016/j.jreng.2024.12.008

Mohammad Hosein Dehnad , Mohammed Hussein Alwan , Alireza Noory , Mohab El-Hakim

The elevated temperatures adversely affect the durability and lifespan of pavement. Understanding the factors that influence asphalt pavement temperature offers valuable insights for creating climate-friendly cities with cooler pavement surfaces. In this study, three aggregates of varying types and colors, two types of bitumen (one without pigment and one with the addition of red pigment, Fe₂O₃), and two levels of mean texture depth (MTD), high and low, were utilized to create asphalt samples using Marshall's method. A total of 38 thermocouple sensors were employed to simultaneously record temperatures in three areas within the samples, as well as the temperatures in shaded and sunlit conditions over a period of 17 days. Furthermore, a comprehensive evaluation was conducted to assess the impact of each factor on the solar reflectance index (SRI). Twelve general linear models (GLMs) were developed using a full factorial design of experiment, and five models with an R² greater than 95% were evaluated and analyzed. The analysis, based on the coefficients derived from the GLMs, indicates that the mean MTD is the most significant parameter affecting surface temperature. Pigment color emerged as the second most influential factor affecting both surface and bottom temperatures. Additionally, the findings revealed that MTD has the greatest impact on the SRI, followed by pigment color and aggregate color. It was also determined that the interaction between density, pigment color, and aggregate color plays a crucial role in determining the temperatures of both the surface and bottom of the specimens.

高温对路面的耐久性和使用寿命产生不利影响。了解影响沥青路面温度的因素为创建具有较冷路面的气候友好型城市提供了有价值的见解。在这项研究中，使用马歇尔的方法，使用三种不同类型和颜色的骨料，两种类型的沥青（一种不含色素，一种添加红色颜料，Fe2O3）和两种平均纹理深度（MTD），高和低，来创建沥青样品。共使用38个热电偶传感器同时记录样品内三个区域的温度，以及遮荫和阳光条件下的温度，持续17天。综合评价各因子对太阳反射率（SRI）的影响。采用全因子试验设计建立12个一般线性模型（GLMs），对R2大于95%的5个模型进行评价和分析。基于GLMs系数的分析表明，平均MTD是影响地表温度的最显著参数。颜料颜色成为影响表面和底部温度的第二大因素。此外，研究结果显示，MTD对SRI的影响最大，其次是颜料颜色和骨料颜色。还确定了密度、颜料颜色和骨料颜色之间的相互作用在决定样品表面和底部的温度方面起着至关重要的作用。

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