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掺钢渣再生沥青混合料路用性能的定量评估

Quantitative Assessment of Road Performance of Recycled Asphalt Mixtures Incorporated with Steel Slag.

作者信息

Wang Zipeng, Wu Shaopeng, Yang Chao, Xie Jun, Xiao Yongli, Zhao Zenggang, Wang Fusong, Zhang Lei

机构信息

Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China.

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.

出版信息

Materials (Basel). 2022 Jul 19;15(14):5005. doi: 10.3390/ma15145005.

DOI:10.3390/ma15145005
PMID:35888472
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9318539/
Abstract

Circular utilization of reclaimed asphalt pavement (RAP) has received extensive attention for its economic and environmental benefits. The application of recycled asphalt mixtures (RAM) in the upper layer of asphalt pavement faces the issue of inferior anti-slip performance and durability. This study aims to recycle steel slag as virgin aggregates in RAM and quantitatively evaluate the service performance of RAM with steel slag. Steel slag and basalt RAM were firstly fabricated and the five different RAP contents were involved. Then tests of Marshall stability, indirect tensile strength and Cantabro spatter loss were conducted to investigate the moisture susceptibility of RAM. Moreover, their high temperature stability, crack resistance and skid resistance were characterized. Indirect tensile fatigue test combined with Hamburg wheel tracking test were carried out to discuss the durability of RAM. The comprehensive performance of RAM with steel slag were quantitatively assessed based on an improved radar chart evaluation method. The results show that involving steel slag reveals a remarkable enhancement function on water stability, high and low temperature performance, skid resistance and fatigue resistance of RAM. Steel slag RAM with 50% RAP content demonstrates a rutting depth of 7.60 mm and a creep slope of 2.54 × 10, indicating its superior durability in high temperature and water environment. Compared with the comprehensive evaluation function of 0.5336 for basalt RAM with 30% RAP dosage, steel slag RAM reaches 0.7801, which represents its preferable road performance.

摘要

再生沥青路面（RAP）的循环利用因其经济和环境效益而受到广泛关注。再生沥青混合料（RAM）在沥青路面上层的应用面临抗滑性能和耐久性较差的问题。本研究旨在将钢渣作为RAM中的原生集料进行回收利用，并定量评估含钢渣RAM的使用性能。首先制备了钢渣和玄武岩RAM，并涉及五种不同的RAP含量。然后进行马歇尔稳定性、间接拉伸强度和坎塔布罗飞溅损失试验，以研究RAM的水敏感性。此外，还对它们的高温稳定性、抗裂性和防滑性进行了表征。开展间接拉伸疲劳试验并结合汉堡轮辙试验，以探讨RAM的耐久性。基于改进的雷达图评价方法，对含钢渣RAM的综合性能进行了定量评估。结果表明，掺入钢渣对RAM的水稳定性、高低温性能、防滑性和抗疲劳性具有显著的增强作用。RAP含量为50%的钢渣RAM的车辙深度为7.60mm，蠕变斜率为2.54×10，表明其在高温和水环境下具有优异的耐久性。与RAP用量为30%的玄武岩RAM的综合评价函数0.5336相比，钢渣RAM达到0.7801，这表明其具有较好的路用性能。

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Environmental performance and functional analysis of chip seals with recycled basic oxygen furnace slag as aggregate.用再生碱性氧气转炉渣作为集料的嵌挤型封层的环境性能与功能分析。
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