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材料导报  2025, Vol. 39 Issue (18): 24050037-6    https://doi.org/10.11896/cldb.24050037
  无机非金属及其复合材料 |
地聚物乳化沥青冷再生混合料的强度发展特征与性能研究
林俊涛1,2,*, 钟超2, 王宗瑞2, 徐方2, 朱晓斌3
1 浙江省道桥检测与养护技术研究重点实验室,杭州 311305
2 中国地质大学(武汉)工程学院,武汉 430074
3 江苏省建筑科学研究院有限公司高性能土木工程材料国家重点实验室,南京 210008
Research on the Strength Development Characteristics and Performance of Cold Recycled Mixtures with Geopolymer and Asphalt Emulsion
LIN Juntao1,2,*, ZHONG Chao2, WANG Zongrui2, XU Fang2, ZHU Xiaobin3
1 Zhejiang Provincial Key Lab for Detection and Maintenance Technology of Road and Bridge, Hangzhou 311305, China
2 Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China
3 State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Research Institute of Building Science Co., Ltd., Nanjing 210008, China
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摘要 地聚物具有较高的力学性能以及较低的碳排放,有望取代水泥应用于乳化沥青冷再生混合料中。本工作通过构建地聚物来增强乳化沥青冷再生混合料的性能。首先,研究不同材料组成地聚物乳化沥青冷再生混合料的间接拉伸强度发展规律;其次,研究该冷再生混合料的路用性能、动态特性以及微结构特征。研究结果表明:地聚物在28 d养生时可以显著提升冷再生混合料的间接拉伸强度,同时地聚物乳化沥青冷再生混合料的高温性能、低温性能及抗水损害性能均能满足要求,且冷再生混合料的动态模量仍存在频率-温度依赖。此外,乳化沥青破乳产生的沥青膜与地聚物反应产物形成了相互交织的结构,这可以解释其宏观力学性能特征。
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林俊涛
钟超
王宗瑞
徐方
朱晓斌
关键词:  冷再生混合料  地聚物  乳化沥青  强度发展  路用性能  动态模量    
Abstract: Geopolymer have potential to replace cement in cold recycled asphalt mixtures due to its high performance and low carbon emissions. This study aims to enhance the performance of cold recycled asphalt mixtures by incorporating geopolymer. Firstly, the development of indirect tensile strength of emulsified asphalt cold recycling mixtures with different material compositions of geopolymer was investigated. Secondly, the pavement performance, dynamic properties, and microstructure characteristics of the cold recycled asphalt mixtures were studied. The results indicate that geopolymer can significantly improve the indirect tensile strength of the cold recycled asphalt mixtures after 28-day curing. Moreover, the high-temperature performance, low-temperature performance, and resistance to water damage of the cold recycled asphalt mixtures with geopolymer meet the requirements. Additionally, the dynamic modulus of the cold recycling mixture still exhibits frequency-temperature depen-dence. Furthermore, the intertwined structure formed by the asphalt film produced by asphalt emulsion demulsification and the reaction products of geopolymer explains its macroscopic mechanical performance characteristics.
Key words:  cold recycled mixture    geopolymer    asphalt emulsion    strength development    pavement performance    dynamic modulus
出版日期:  2025-09-25      发布日期:  2025-09-11
ZTFLH:  U414  
基金资助: 国家自然科学基金(52278285;51908522);浙江省道桥检测与养护技术研究重点实验室开放课题(202305Z)
通讯作者:  *林俊涛,博士,中国地质大学(武汉)工程学院副教授。目前主要从事道路工程材料以及固废资源化利用研究工作。linjt@cug.edu.cn   
引用本文:    
林俊涛, 钟超, 王宗瑞, 徐方, 朱晓斌. 地聚物乳化沥青冷再生混合料的强度发展特征与性能研究[J]. 材料导报, 2025, 39(18): 24050037-6.
LIN Juntao, ZHONG Chao, WANG Zongrui, XU Fang, ZHU Xiaobin. Research on the Strength Development Characteristics and Performance of Cold Recycled Mixtures with Geopolymer and Asphalt Emulsion. Materials Reports, 2025, 39(18): 24050037-6.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.24050037  或          https://www.mater-rep.com/CN/Y2025/V39/I18/24050037
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